A fire pit insert is a heavy-gauge steel liner that drops inside a built-in backyard pit to hold the flames away from masonry, paver or poured concrete. Without one, repeated high-temperature fires slowly crumb the mortar, crack the pavers and spit loose embers toward your deck and your neighbors’ yard.
We compared the ten best fire pit inserts for backyards below by steel thickness, interior diameter, venting and how each one holds up across seasons. Six of them ship with customer photos from real installs, so you can see the fit before you commit.
One flag before we start: the gas insert you see in shopping results is a different purchase from the steel liner. A propane or natural gas drop-in pan burns at a controlled temperature and needs a fire table, not a wood fire pit. We include one here because buyers search for it constantly, and it sits at number nine with a clear warning.
Table of Contents
Top 3 Fire Pit Inserts for Backyards in 2026
Sunnydaze 33 Inch Heavy Duty Ring
- 2 mm steel
- 27 inch inner diameter
- Four-piece bolt-together
- Open bottom
TITAN GREAT OUTDOORS 36 Inch Ring
- 10-gauge steel
- Swivel cooking grate
- 1 inch anti-warp flange
- Concrete anchors
Koutemie 35 Inch Smokeless Liner
- 31 inch inner diameter
- Top vent hole ring
- 8.5 inch height
- Open bottom
Our top three covers the three decisions most people actually face: a dependable general liner, a ring that doubles as a grill, and an affordable insert with real venting. The Sunnydaze takes the top spot on evidence rather than hype, with 1254 reviews behind it and steel that holds shape season after season.
Quick Overview: Best Fire Pit Inserts for Backyards (October 2026)
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Sunnydaze 33 Inch Heavy Duty Ring Insert
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TBMLC 48 Inch Galvanized Steel Fire Ring
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Koutemie 35 Inch Smokeless Ring Liner
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TITAN GREAT OUTDOORS 36 Inch Ring with Grate
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OutVue 42 Inch Square Fire Pit Ring
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Iron Forge Tools 36 Inch Smokeless Insert
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AnBaiMei 28 Inch Smokeless Ring Insert
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SoulMate 40 Inch Smokeless Fire Pit Ring
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onlyfire 12 Inch Square Gas Burner Pan
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XGMDD 36 Inch Galvanized Fire Pit Ring
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Check Latest Price |
1. Sunnydaze Heavy Duty Steel Fire Pit Ring Insert – Best All-Round Liner
Sunnydaze Heavy Duty Steel Fire Pit Ring Insert, 33″ Outer / 27″ Inner Dia
2 mm alloy steel
27 inch inner and 33 inch outer diameter
10 inch high
Open bottom, wood burning
Pros
- 2 mm steel holds shape under repeated high fires
- High-temperature paint has not bubbled
- Assembles in about five minutes with included hardware
- 27 inch interior seats a group comfortably
- Works as the inner liner of a block or stone surround
Cons
- Thin paint allows surface rust after about a year
- Some shipments arrive missing screws
- Rim can arrive slightly bent and need levelling
We have watched this one get rebuilt into more block fire pits than any other insert in this roundup, and the thing that keeps it in service is the 2 mm alloy steel. That is thicker than the typical marketplace ring, and it is the difference between a liner that stays round and one that slowly folds at the top edge.
The 27 inch inner diameter and 33 inch outer diameter give you 10 inches of wall height and a burn area that comfortably seats a group around the fire. It assembles as four quarter-circle panels with the hardware in the box, so you can set it in a surround on a single afternoon.
Because the ring has no bottom, you decide the base. Landscape brick laid on edge around the outside, a gravel or paver base underneath, and you have the standard DIY masonry fire pit layout. Reviewers report it working equally well buried in-ground or freestanding above ground.
Fit inside a block surround is the part to plan. Measure the clear opening between your blocks, subtract the 33 inch outer diameter, and you want roughly an inch of gap so the flange rests flat instead of rocking. Owners using it inside existing block walls say that gap is what keeps the ring level through the first few burns.
What the 2 mm steel actually buys you
The gauge is the reason this ring outlasts thinner ones in the same price bracket. At 2 mm it holds its shape under the kind of repeated high burn that warps 0.8 mm steel, and that matters most in a fixed surround where you cannot straighten the ring later.
The high-temperature paint finish has held up for many owners across many burn sessions without bubbling, which is more than you can say for the standard black coating on the cheapest rings. It is a paint, not a guarantee, so treat the surface with care in a wet climate.
Where the paint and hardware disappoint
Surface rust is the recurring complaint after about a year of exposure, mostly on owners who store nothing over the pit through a wet winter. A fresh coat of high-temperature spray paint knocks it back, and owners who do that report no further trouble.
Missing screws in the box and a rim that arrives slightly bent are both fixable in minutes before the first burn. Neither is a deal breaker, but check the hardware bag before you start so you are not hunting for a wrench mid-build.
2. TBMLC 48 Inch Round Galvanized Steel Fire Ring – Wide Ring for Big Fires
TBMLC 48″ Round Galvanized Steel Fire Ring Pit/Raised Garden Bed Kit
0.8 mm galvanized steel
48 inch diameter
12 inch high
Wave-shaped profile
Pros
- Zinc galvanizing resists rust well
- 48 inch footprint suits large backyard fires
- Low wide profile contains the fire safely
- Wipes clean with water
- Gloves included
Cons
- 0.8 mm steel is light gauge for hard fires
- Wave profile is less rigid than a flat-sided ring
The reason to look at this ring is the zinc layer. Galvanizing is a coating on the surface rather than an oxide finish, so it holds up better in wet or coastal yards than the painted rings of similar cost, and that rust resistance is the whole point of this pick.
At 48 inches across and 12 inches tall, this is a bonfire ring rather than a cozy backyard liner. It weighs about 10 pounds, which sounds light until you realize it is a 4 foot steel ring, and the low wave-shaped profile with folded edges keeps the fire contained without a tall wall.
Owners use it in two ways: dropped into a dug pit for an in-ground setup, or set on cleared ground and ringed with stone. Because the profile is low, it also doubles as a raised garden bed frame or grill support, which is genuinely useful if you want one object doing two jobs.
Maintenance is close to nothing. A wipe with water or a mild cleanser after a burn is enough, and the folded edges and rounded corners mean there are no sharp seams to collect ash. Gloves ship in the box, which matters more than it sounds when you are handling bare galvanized steel.
Galvanizing is the reason to pick it
If your pit sits in a damp yard, takes rain, or lives near the coast, the zinc coating is the deciding factor. It outlasts painted steel in exactly the conditions that destroy cheap rings, and owners report no meaningful corrosion after extended outdoor use.
The 48 inch diameter also solves a real problem. Once you cross about 36 inches the fire burns down into the middle and the outer ring just holds ash, whereas a 4 foot ring keeps a wider bed of coals and a longer burn.
Why 0.8 mm steel is the limiting factor
Point eight millimeter steel is containment, not campground abuse. It is fine for a steady wood fire in a backyard ring, but if you burn hard, repeatedly, or push the logs against the wall, expect the top edge to take a knock.
The wave-shaped profile is another trade. It is less rigid than a tall flat-sided ring of the same height, so in a deep surround you want to shore or brace it rather than assume it will hold its own shape forever.
3. Koutemie Smokeless Fire Pit Ring Liner – Best Value Smokeless Setup
Koutemie Outdoor Smokeless Fire Pit Ring Liner 35-Inch Outer/31-Inch Inner Diameter, Heavy Duty Solid Metal Steel Round Firepit Rim Insert for Outside DIY Campfire Ring Above or In-Ground, Black
31 inch inner diameter
35 inch outer diameter
8.5 inch high
Top ventilation holes
Pros
- Top vent holes improve airflow and cut smoke
- 31 inch interior gives room for real firewood
- Light enough to reposition yet holds shape
- Assembles in minutes
- Works above-ground or in-ground
Cons
- 6.5 lb weight lets it shift out of alignment in a surround
- Open bottom means you supply the sand or stone base
This is an insert in our list with a genuine ventilation pattern at a modest build cost, and that venting is the feature buyers care about. A circle of holes along the top edge pulls air through the fire so the smoke burns off instead of drifting off the pit toward the house.
Size is the other draw. A 31 inch inner diameter with a 35 inch outer and 8.5 inch height is a middle size that works in most block surrounds without the measuring panic of a 48 inch ring, and the burn area is large enough for a full load of firewood.
Assembly is a matter of bolting the panels together with the included hardware. It goes up fast, and at 6.5 pounds you can lift it into place or pull it out for cleaning without recruiting a second person.
How the top vent ring helps
The holes along the top edge feed combustion air into the fire from all directions, which supports a secondary burn of the smoke as it rises. Owners with a properly vented pit report a visible difference in how much smoke the fire throws.
That word properly matters. The vents only help if air can move through and around the surrounding construction. A ring of holes inside a sealed concrete pit still has nowhere for the smoke to go, and we explain that trap in detail later in this guide.
Where the light gauge shows up
At 6.5 pounds the ring is light enough to be knocked out of round inside a tight block surround. Reviewers with masonry surrounds say to check the fit after the first burn and shim it level rather than assuming it stays square.
The open bottom also means the base is your job. Lay sand or stone under it for an in-ground build. Skip that and ash drops straight onto whatever is beneath, which defeats a lot of what the liner is there to protect.
4. TITAN GREAT OUTDOORS 36 Inch Ring with Swivel Cooking Grate – Best for Cooking
Ash & Ember 36″ Steel Fire Pit Ring with Cooking Grate, 15.5″ x 19.5″ Swivel Grate with Spring Handle, Steel Fire Ring & Campfire Grill Combo for Outdoor Cooking, Durable High-Temp Finish
10-gauge steel
36 inch diameter, 7.75 inch high
15.5 by 19.5 inch swivel grate
Pros
- Thickest steel in the roundup at 10 gauge
- Swivel grate adds 300 sq in of cooking surface
- Flanged rim resists warping
- Anchors included for a permanent set
- Highest average rating in the group at 4.7 stars
Cons
- Cardboard packaging can arrive dented or bent
- Anchor tabs may need cutting for tight surrounds
- Two people to reposition at 65 pounds
This is the ring we would put in a pit that gets burned hard and often, because 10-gauge steel is a step above everything else here. At roughly 55 to 65 pounds it is not a product you casually lift, but it is a product that shrugs off the kind of fire that ruins a thinner ring.
It carries the highest average rating in the group at 4.7 stars, and the reason owners keep coming back is the swinging grate. At 15.5 by 19.5 inches it gives you 300 square inches of cooking surface, and it pivots clear of the flame when you are done so it does not sit cooking itself.
Five draft and drain holes do double duty, feeding the fire and letting rainwater out so you are not dumping a pool of water into the pit before the next burn. The 1 inch top flange resists warping, which is the detail that keeps a big steel ring from curling.
Concrete anchors come in the box, so you can fix the ring in place for the season or unbolt it and tip it back for cleaning. The ring is 36 inches across and 7.75 inches tall, with listed package dimensions of 38 by 38 by 9 inches.
What 10-gauge steel means for hard burns
Gauge is just thickness, and thicker steel resists two things thin steel cannot. It holds its shape under a hard fire, and it stays rigid while logs are pushed against it, which is the moment most rings deform permanently.
It also means the ring stays flat on the ground, so a grate or a cooking surface does not wobble. For anyone who cooks over the fire rather than just sitting beside it, that stability is the feature that matters most.
Where the build falls short
Packaging is the weak link. A simple cardboard box can result in a dented or bent ring on arrival, though sellers generally resolve it, so inspect the ring on delivery and photograph any damage before assembly.
The anchor tabs may need trimming to fit a tight block surround, and some orders have arrived without the grate handle. At 65 pounds the ring also takes two people to reposition, which rules it out for anyone who wants to move the fire around the yard.
5. OutVue 42 Inch Square Fire Pit Ring – Best for Square Layouts
OutVue 42 inch Square Fire Pit Ring, Heavy Duty Fire Ring
42 by 42 inch square
10.3 inch high
25.5 lb steel build
Powder-coated finish
Pros
- Square footprint stands out in a round-ring market
- Substantial 25.5 lb steel with durable powder coat
- Four-piece assembly goes together with basic tools
- Sized well for a backyard gathering pit
- Replacement parts available from the maker
Cons
- Corners waste space versus an equal round ring
- Open bottom so a gravel or sand base must be added
Square pits are harder to dress than round ones, and this is one of the few square inserts with real review volume behind it. If your patio is laid out in straight lines, a round ring always looks borrowed. This one does not.
It measures 42 by 42 inches and stands 10.3 inches tall, weighing about 25.5 pounds in solid steel with a high-temperature black powder coat. Four pieces bolt together with basic tools, and the finish has held up for owners who expected paint to flake.
The open bottom leaves placement wide open. Set it in a dug pit for an in-ground fire, or stand it on a prepared base and ring it with stone or pavers. Because the wall is a full 10 inches, it contains embers better than the 8.5 inch rings in this list.
It is also a ring you can grow into. Replacement parts are available from the manufacturer, which matters more for a square shape than a round one, because square sections are harder to source from a general retailer when something bends.
When a square footprint earns its place
Square wins on layout, not on efficiency. If your seating is arranged in a square or your paving runs in one direction, a round ring leaves awkward triangular gaps that you end up filling with plants or extra stone nobody planned for.
It also suits a rectangular or square masonry surround with far less fudging than a round ring needs. Line the inner face of the surround, and the geometry is simpler all the way around.
Where the corners cost you
Geometry works against you here. A 42 inch square encloses less usable fire area than a 42 inch circle, because the corners are dead space that neither holds firewood nor radiates heat.
The open bottom is the other expected trade. Plan a gravel or sand base before you set it, otherwise ash drops straight onto the soil or your paver base with nothing between.
6. Iron Forge Tools 36 Inch Smokeless Insert – Best Smokeless Build
Iron Forge Tools Smokeless Fire Pit Ring Outdoor Insert 36 Inch Round Steel
36 inch ring, 30 inch inner diameter
10 inch high
Thicker-than-standard steel
Engineered airflow
Pros
- Noticeably heavier gauge than typical inserts
- Smoke reduction works in a properly vented build
- Clean welds and thick material for fixed installs
- Size range from 24 to 60 inch in one family
Cons
- Built as a fixed install
- not a portable ring
- Smoke reduction depends on the 1 inch air gap and base vents
This is the insert we would build around if smoke control is the whole reason you are shopping. At 27.5 pounds the steel is visibly heavier than the generic rings nearby, and the airflow design is patented pending, so it is not simply a stamped ring with a few holes punched in it.
It is 36 inches across with a 30 inch inner diameter and a 10 inch wall height. That extra 3 inches of height over the 8.5 inch rings matters in a pit where you want a deeper bed of coals rather than a shallow spread.
The manufacturer instructions are unusually specific: rock base, a 1 inch gap between the ring and the surrounding wall, and base air vents. Owners who followed that guidance report the smoke difference clearly, and that is a different result from most listings that promise smokeless and say nothing about install conditions.
The same design family runs from 24 inch up to 60 inch, so you can match a smaller patio pit or a large gathering bowl without changing vendors. Clean welds and thick material are what owners notice first when they handle it.
Why airflow depends on the surrounding pit
A smokeless ring is a system, not an object. It burns cleaner because air enters below the fuel and the top ring feeds combustion. Seal that air in with solid concrete on all four sides and the design has nothing to work with.
Follow the one inch air gap, use a rock base rather than a sealed slab, and leave the base vented. That is the difference between owners reporting a real smoke reduction and owners wondering why the smokeless insert did nothing.
Where the fixed-install rule bites
This is designed as a permanent installation, not something you carry to a campground. At 27.5 pounds it is manageable for two people but not for one, and there is no carry handle because the design expects it to stay put.
The 1 inch clearance requirement is real planning work. If your masonry surround is tight, you need to account for that gap during the build rather than discovering it on assembly day.
7. AnBaiMei 28 Inch Smokeless Fire Pit Ring Insert – Best for Small Patio Pits
AnBaiMei 28 Inch Smokeless Fire Pit Ring Insert Firepit Kit Outdoor, Black
28 inch inner diameter
32 inch outer diameter
8.5 inch high
13 lb build weight
Pros
- Vent hole ring improves efficiency and cuts smoke
- 13 lb weight feels substantial
- Bolts together in about five minutes
- Panels detach for flat storage
- Owners report no rust on the ring after a year
Cons
- Fastener bolts show surface rust even when the ring does not
- Fit needs adjusting during install
- Boxed units can arrive with a damaged carton
Most backyard pits are not 48 inches across. If yours is a compact patio corner, a 28 inch inner diameter is often the correct answer where every larger ring in this list would need a rebuild of the surround.
At 13 pounds the ring feels more substantial than its size suggests, and owners report it resists deforming in a paver-ring build over a year or more of use. That weight is the balance point between a liner that stays rigid and one you can still carry to a different corner.
It bolts together in about five minutes with a drill, and the multi-panel design lets you detach the sections and fold them flat for storage. That matters if you want to clear the patio in winter or move the fire for an event.
Why a 28 inch ring suits a tight courtyard
Smaller pits fail quietly. Too big a ring and it cannot sit flat on the surround, so the flange rocks and the wall leans. A 28 inch inner and 32 inch outer leaves room for the surrounding pavers or blocks to carry the weight.
The vent holes along the top edge still give you better airflow than a plain ring at the same size, so you are not giving up the smoke reduction just because the pit is small.
Where the hardware and fit cause friction
The ring holds up but the fastener bolts do not always. Reviewers report surface rust on the bolts after a year while the ring body itself looks clean, which points to cheap hardware rather than bad steel.
Fit is rarely exact on the first attempt. Owners adjust the ring inside a block surround during install, and some units arrive in a damaged carton, so check the panels for bends before you bolt them together.
8. SoulMate 40 Inch Smokeless Fire Pit Ring – Best-Selling Fire Ring
SoulMate Outdoor 40-Inch Outer/36-Inch Inner Fire Pit Ring Smokeless,Duty Solid Metal Steel Round Firepit Rim Insert for DIY Fire Pits, Outdoor Above or In-Ground, Camping Garden Patio Backyard.
36 inch inner diameter
40 inch outer diameter
8.5 inch high
Eight-piece screw-fixed build
Pros
- Best-selling fire ring with a very large inner area
- Eight screw-fixed panels stay rigid
- Vent holes improve airflow and cut smoke
- Wide range of diameters in the same design
- Reasonable weight for a 40 inch ring
Cons
- Lowest average rating here at 4.3 with 6 percent one-star feedback
- Alloy steel is thinner than the heavy-gauge option
- Vent holes weaken the top edge versus a solid ring
This ring tops the Fire Rings sales chart, and for most buyers that is a fair signal. A 36 inch inner diameter across 40 inches outer gives you a large burn area at a weight most people can still lift and reposition, which is a combination the heavier rings do not offer.
It is built as an eight-piece kit with screw-fixed joints, which adds rigidity over a two or four piece design. Assembly takes minutes, and the top circle of ventilation holes gives you the airflow pattern that makes the burn cleaner than a plain ring.
The alloy steel holds its shape and contains ash and debris, and the same design is available across a spread of diameters, which makes it easy to match a pit you have not measured to the last inch. Sixteen pounds is light enough for one person to move with a clear plan.
Because there is no bottom, you choose the base. Add stones or sand beneath, or bury the ring for an in-ground pit, and it works in both of the most common backyard layouts without modification.
Why the 36 inch interior matters
Interior diameter is the number that determines whether the fire actually burns down into the middle. Thirty-six inches of inner width keeps a broad bed of coals going, and that is the difference between a fire you sit around and one that shrinks to embers in ten minutes.
Combined with the vents, you get a ring that holds a large fire and burns it more completely. For a pit that sees regular use, that combination does more than any cosmetic finish.
Where it trails the heavy rings
This is the lowest average rating among the ten, at 4.3, with 6 percent of reviews at one star. That feedback clusters around thin material and the open bottom, so expect cosmetic issues rather than structural failure.
The vent holes are a genuine trade. They improve airflow but weaken the top edge, so this ring rewards a steadier fire than the thick-wall designs that tolerate being shoved hard. If you burn aggressively, the 10-gauge option is the safer bet.
9. onlyfire 12 Inch Square Gas Burner Pan – Best for Gas Fire Tables
Onlyfire 12″ Square Fire Pit Burner Pan with Square Burner Ring, 88,000 BTU
12 inch square pan, 9 inch burner
304 stainless steel
88,000 BTU
1/4 inch flange
Pros
- Square flame pattern covers 27 percent more area than a round burner
- 304 stainless resists rust and high heat
- Burner pre-installed so no welding
- Weep holes prevent water pooling
- Works with fire glass or lava rock
Cons
- Propane conversion needs a separately sold air mixer
- Gas insert only
- not a wood-burning ring
- Needs a fire table opening with a 1/4 inch flange lip
Stop here if you are building a wood fire pit. This is a gas burner pan for a fire table, and while the shopping results mix it in with steel liners, it solves a different problem: controlled flame at a lower temperature with no wood, no ash and no smoke complaint.
It is a 12 inch square pan with a 9 inch square burner already installed, rated at 88,000 BTU for natural gas or propane. The burner comes pre-fitted, so you drop it into a table opening, connect the gas line and light it, with no welding involved.
Why this is a different purchase
The material difference is real. Commercial-grade 304 stainless steel resists rust, corrosion and high heat across seasons in a way painted carbon steel cannot, and that is why gas fire tables live outdoors year round next to a pool or a patio set.
Coverage is the other advantage. A square flame pattern covers 27 percent more area than an equal round burner, which matters in a square or rectangular table where a round burner leaves cold corners. Weep holes stop water pooling in the pan after rain.
Where the propane setup adds a step
Running propane means buying an air mixer separately. It is a small part, but it is not in the box, and skipping it leaves you with a leaner flame than the rating implies. Weep holes handle drainage, and the pan needs a minimum 2 inch media depth.
The 1/4 inch flange on all four sides has to rest on the lip of your table opening. If your opening does not have that flange, you are adapting the table, not the pan, and that is where most install problems show up.
10. XGMDD 36 Inch Galvanized Fire Pit Ring – Most Versatile
36″ Heavy Duty Fire Pit Ring for Outside, Galvanized Steel Wood Burning Firepit Insert for Backyard Bonfire, Outdoor Fireplace, Camping & Patio Gatherings, High Heat Resistant Metal Fire Ring
36 inch diameter, 12 inch tall
0.8 mm galvanized steel
Detachable panel design
Pros
- Low cost for a large ring
- Tall 12 and 17 inch profiles hold more wood
- Many size and height options in one design
- Useful as a raised bed border or debris burner
- Quick to assemble
Cons
- Black coating burns off quickly and fades to bare galvanized gray
- 0.8 mm steel dents and the top edge folds under hard fires
- Some 1 and 3 star reviews report rim deformation
- Wing nuts slow assembly compared with bolts
This is the ring to buy when the pit is temporary, the burns are gentle, or you want to test whether a fire pit works at your house before spending on masonry. At 36 inches and 12 inches tall it gives you a larger profile than most rings at this weight class.
The taller profile is the underrated feature. A 12 inch wall holds considerably more firewood than the standard 8 inch ring, and a 17 inch height version exists in the same design if you want a deeper fire bowl with less reaching.
What 0.8 mm steel is fine for
It is perfectly adequate for containment in a casual setup. A steady wood fire in a clear area, with logs kept off the wall, will not challenge it, and the ring will keep ash and embers where they belong.
The detachable panel design also makes it genuinely versatile. Owners use it as a raised bed border or a yard-waste burner, and both jobs tolerate thin steel that a dedicated fire pit ring would not.
Where the finish and top edge fail
The finish is the loudest complaint. The black coating burns away in the first or second fire and many units turn plain galvanized gray, which is cosmetic but changes the look you were aiming for in a finished patio.
Thin 0.8 mm steel can dent, and a group of reviewers report the top edge folding in after repeated hard burns, which is why this sits at the bottom of the ranking. It also scores lowest here at 4.0, with 11 percent one-star feedback. Wing nuts make assembly slower than a bolted design.
Do You Actually Need a Fire Pit Insert?
Not every fire pit needs one, and buying the wrong thing is how people end up with a ring sitting on top of a block surround instead of inside it. Here is the honest version of when to buy and when to skip it.
Stationary masonry or block surround: Highly recommended. The mortar between blocks is what fails first under sustained heat, and a steel liner takes that heat instead. Owners regularly rebuild pits around an insert that saved the blockwork.
Poured concrete built-in pit: Highly recommended, with a caveat. Concrete handles heat better than mortar but still degrades and spalls over years of hard burns. The real issue in a poured pit is ventilation, covered in the next section.
DIY in-ground dug pit: Recommended. A ring keeps soil and ash apart, gives you a defined fire edge, and stops the fire from creeping outward into the grass at the base.
Above-ground ring on bare ground: Optional but cheap. A ring defines the fire and keeps it off the lawn, and gravel under it stops the ring from sinking. This is the situation where a galvanized ring earns its place quickly.
Portable or camping fire pit: Not needed. A portable pit is already a steel bowl designed to take heat directly. Buying a ring to fit inside it adds weight and accomplishes nothing.
All-brick fire pit: Usually not needed. A well-built all-brick pit with thick walls self-insulates, which is why so many older masonry pits have survived decades without a liner.
Gas fire table: A liner is the wrong category entirely. You want a burner pan, which is item nine in this roundup. The two products solve different problems and mixing them is the most common purchasing error we see.
How to Measure Your Pit in 4 Steps
Wrong diameter is the number one reason inserts come back. Four measurements cover it, and you can do all of them before you order.
1. Measure the clear opening. Measure the inside face of your blocks or pavers, wall to wall, in two directions. For a square pit both numbers should match. This is the number your insert outer diameter has to sit inside.
2. Check the depth. Measure from the top of the surround to the base. Rings here run 8.5 inches to 12 inches tall, and you want the wall to sit at or slightly below the surround so the flange rests flat.
3. Note the shape. Square and octagonal surrounds need a matching insert. Forcing a round ring into a square opening leaves gaps at the corners where ash and heat escape.
4. Allow the air gap. If you want a smokeless design, leave roughly an inch between the ring and the surrounding wall. Bring your tape measure to the hardware store and check the insert before you commit.
Materials: Carbon Steel, Stainless, Galvanized and Iron
Most fire pit inserts on the market are steel, and the useful question is not steel versus something else but which steel and how thick. Here is the ranking by what actually changes in service.
Heavy-gauge carbon steel, 10 gauge or thicker. The best heat and impact tolerance in this roundup, and the right choice for hard, frequent burns. The cost is weight: roughly 55 to 65 pounds means two people to move it.
Mid-gauge carbon or alloy steel, around 2 mm. The balance point most buyers should aim for. It holds shape through repeated high fires, comes in a manageable weight, and is what makes the top pick here a safe recommendation.
Galvanized steel at 0.8 mm. The zinc coating resists rust better than painted steel in wet or coastal yards, but the thin gauge is the weak point. Good for containment and light use, not for sustained hard burning.
304 stainless steel. The right material for gas burner pans rather than wood liners. It resists corrosion and heat over seasons and is why gas fire tables survive outdoors year round.
Corten and weathering steel. Popular for looks in marketplace listings. The patina is attractive and the steel is heavy, but it is a finish choice rather than a performance upgrade, and it stains surrounding surfaces as it weathers.
On gauge: lower gauge means thicker steel. A 10 gauge ring is roughly twice the thickness of a 20 gauge ring, and that difference is what separates a liner that survives from one that folds.
The Ventilation Trap: Why Smokeless Inserts Disappoint
Most disappointed smokeless insert buyers are not using a bad product. They are using a good product in a pit with nowhere for the air to go.
A smokeless design burns smoke by feeding combustion air into the fire so it ignites a second time above the fuel. That works when air enters from below and leaves at the top. It stops working the moment you seal the pit.
A homeowner in a popular r/landscaping thread described exactly this: a poured concrete built-in pit with no ventilation, where smoke bellows out and makes it impossible to stand nearby. One r/DIY builder reported that dropping the original metal ring back into that same pit restored some airflow and helped somewhat.
The practical rule is simple. Leave a one inch gap between the ring and the surrounding wall, use a rock or gravel base rather than a sealed slab, and keep the base vented. Builders in the same threads also stress that a smokeless setup needs a hot, consistent fire, because a weak intermittent fire never reaches the secondary burn.
If your pit is already poured solid and you cannot add a vent, an insert will still protect the concrete. Just do not expect the smokeless marketing to fix the smoke.
Fire Safety Rules Before Your First Burn
Nothing in this roundup makes an unsafe fire safe. These rules are what separate a good evening from a call from the fire department.
1. Check local burn rules first. Many regions restrict wood burning by season or by air quality day. The restriction applies to your insert too, not just to open fires.
2. Keep combustibles clear. Stay well back from your house, deck, fence, trees and overhanging branches. A wood fire throws sparks far beyond the ring itself.
3. Never burn on a windy day. Wind is the factor that turns a contained fire into a neighborhood problem, and an insert does not stop airborne embers.
4. Have water and a shovel on hand. Not just a hose. A shovel and a bucket of water or sand let you smother embers instantly.
5. Do not leave the fire unattended. Not for a moment. This is the rule that prevents nearly every structure fire involving a backyard fire pit.
6. Control embers when you finish. Douse, stir the ash, and drown it until it is cold to the touch. Embers buried in ash stay hot for hours and travel easily.
7. Store wood away from the pit. A stacked woodpile next to a fire pit is a fuel load waiting for a spark, and the same applies to a pile of cardboard or leaves.
Frequently Asked Questions
What is the best material for a fire pit insert?
Heavy-gauge carbon steel around 10 gauge is the most heat and impact tolerant. Around 2 mm of alloy steel is the best balance for most backyard pits because it holds shape under repeated high fires without the weight of the heaviest rings. Galvanized 0.8 mm steel resists rust in wet climates but dents under hard burning. 304 stainless is the right material for gas burner pans rather than wood liners.
What is the best fire pit ring insert?
For most built-in backyard pits, the best all-round choice is a mid-gauge steel ring around 2 mm thick with an open bottom and a top lip flange, sized so the outer diameter sits roughly an inch inside your surround. For cooking, a 10-gauge ring with a swivel grate is harder to beat. For smoke control, choose a ring with top ventilation holes and build the pit with an air gap.
Do you have to use an insert for an outdoor fire pit?
No, but you need one for a stationary masonry or block surround because mortar fails first under sustained heat. A poured concrete pit benefits from one but also needs ventilation or smoke will not clear. An above-ground ring is optional. A portable camping pit does not need a liner at all, and a thick all-brick pit usually self-insulates. A gas fire table needs a burner pan rather than a steel liner.
Do you really need a fire ring for a fire pit?
A fire ring sits on the ground or on a base and contains the fire at ground level. An insert drops into a built-in pit and is tall enough to shield the surrounding masonry while its flange rests on the surround. If you have a block or concrete pit, you want an insert. If you have a cleared patch of yard or a portable pit, a ring is all you need.
What are the disadvantages of a smokeless fire pit?
The main disadvantage is that a smokeless design only works if air can move through the surrounding pit, so a sealed concrete pit with no vent defeats it entirely. It also needs a hot, consistent fire to reach the secondary burn, so a weak intermittent fire produces no reduction. Top ventilation holes weaken the top edge slightly, and owners of pits poured without vents report smoke drifting toward the house.
Conclusion: Which Fire Pit Insert Should You Buy?
For most built-in backyard pits, the Sunnydaze 33 inch ring is the best fire pit insert because 2 mm steel, 1254 reviews and a 27 inch interior cover the widest range of real cases without a big weight or a big learning curve. Cook on your fire and the 10-gauge Titan ring with the swivel grate is worth the extra pounds.
Measure your clear opening before you order, leave that one inch air gap if you want a smokeless design, and buy the right category: a burner pan for a gas fire table, a liner for masonry. Check each product’s current details, then build it properly.