A linear fire pit has a long, narrow burner, and makers publish them from 24 to 122 inches with ratings from 50,000 to 300,000 Btu/h. How output scales with length depends on the maker. HPC's linear burner works out to 25,000 Btu/h per foot, while Firegear's natural gas ratings per inch drop on its burners past 56 inches. A table's length is not its burner's length, so read both.
This guide covers outdoor gas burners and tables, not indoor linear fireplaces. It compares published specs and documents, not tested products, and it leaves out what a maker doesn't print.
Linear Burner Lengths and Btu Ratings
HPC and Firegear print the fullest burner tables. HPC's linear burner is 304 stainless steel, and its Torpedo version adds output. Firegear's Pro T is brass, with separate natural gas and propane models. The per-inch columns are my division of each rating by its length.
HPC burner length, in., Linear, Btu/h, Torpedo, Btu/h, Linear, Btu/h per inch
24
- Linear, Btu/h
- 50,000
- Torpedo, Btu/h
- 100,000
- Linear, Btu/h per inch
- 2,083
36
- Linear, Btu/h
- 75,000
- Torpedo, Btu/h
- 125,000
- Linear, Btu/h per inch
- 2,083
48
- Linear, Btu/h
- 100,000
- Torpedo, Btu/h
- 150,000
- Linear, Btu/h per inch
- 2,083
60
- Linear, Btu/h
- 125,000
- Torpedo, Btu/h
- 175,000
- Linear, Btu/h per inch
- 2,083
72
- Linear, Btu/h
- 150,000
- Torpedo, Btu/h
- 200,000
- Linear, Btu/h per inch
- 2,083
96
- Linear, Btu/h
- 200,000
- Torpedo, Btu/h
- 250,000
- Linear, Btu/h per inch
- 2,083
120
- Linear, Btu/h
- 250,000
- Torpedo, Btu/h
- 300,000
- Linear, Btu/h per inch
- 2,083
Firegear Pro T burner length, in., Natural gas, Btu/h, Per inch, Propane, Btu/h, Per inch
24
- Natural gas, Btu/h
- 50,000
- Per inch
- 2,083
- Propane, Btu/h
- 60,000
- Per inch
- 2,500
38
- Natural gas, Btu/h
- 90,000
- Per inch
- 2,368
- Propane, Btu/h
- 95,000
- Per inch
- 2,500
44
- Natural gas, Btu/h
- 100,000
- Per inch
- 2,273
- Propane, Btu/h
- 110,000
- Per inch
- 2,500
56
- Natural gas, Btu/h
- 135,000
- Per inch
- 2,411
- Propane, Btu/h
- 140,000
- Per inch
- 2,500
68
- Natural gas, Btu/h
- 140,000
- Per inch
- 2,059
- Propane, Btu/h
- 170,000
- Per inch
- 2,500
86
- Natural gas, Btu/h
- 145,000
- Per inch
- 1,686
- Propane, Btu/h
- 215,000
- Per inch
- 2,500
90
- Natural gas, Btu/h
- 165,000
- Per inch
- 1,833
- Propane, Btu/h
- 215,000 or 225,000
- Per inch
- 2,389 or 2,500
110
- Natural gas, Btu/h
- 185,000
- Per inch
- 1,682
- Propane, Btu/h
- 275,000
- Per inch
- 2,500
122
- Natural gas, Btu/h
- 200,000
- Per inch
- 1,639
- Propane, Btu/h
- 300,000
- Per inch
- 2,459
Sources: HPC linear burner drawing, Firegear Pro T manual, Table 1 for lengths and Table 2 for ratings. For the 90 inch propane model, Firegear's cover table prints 215,000 and Table 2 prints 225,000, so both are shown; ask Firegear which is right. HPC's drawing labels its figures recommended Btu. Firegear bases its ratings on 7.0 inches of water column on natural gas and 11.0 on propane, and says line size can change them.
How Does BTU Scale With Burner Length?
HPC's ratings are the simplest: 25,000 Btu/h for each foot of linear burner, and 50,000 more at every length for the Torpedo version. Firegear's propane ratings hold almost exactly to 2,500 per inch. Its natural gas ratings don't follow length. Per inch they peak at 2,411 on the 56 inch burner and fall to 1,639 on the 122 inch one. The 68 inch natural gas model is 140,000 and the 86 inch model is 145,000, so 18 more inches add 5,000, and then the 90 inch model is 165,000. Firegear doesn't say why, so take the number from the rating plate, not from the length.
Tables vary more, because the burner can be much shorter than the table. The Outdoor Plus rates its Cabo Linear at 65,000 with a 24 inch burner in the 56 inch table and the same 65,000 with a 54 inch burner in the 90 inch table. Prism's 80 inch Tavola 5 is 65,000 with a 24 inch burner, and its 90 inch Tavola 6 is 90,000 with a 60 inch T burner. Real Flame's 72 inch La Valle is 120,000 and its 72 inch Geneva is 65,000, both with 40 inch burners. Table length predicts little, and burner length predicts output only within one maker's line. The number on the rating plate is the one to design to.
How Long Is a Linear Fire Pit Table?
Inches, length by width by height. Input is in Btu/h, with the burner length where the maker prints it.
Table, Size, Burner, Input
Outdoor GreatRoom Kenwood and Brooks chat
- Size
- 61 by 31 by 20 or 21.5
- Burner
- 12 by 42
- Input
- 65,000 propane, 80,000 natural gas
Outdoor GreatRoom Havenwood 62
- Size
- 62 by 30 by 24.5
- Burner
- 12 by 42
- Input
- 65,000 propane, 80,000 natural gas
Outdoor GreatRoom Cove 54 and 72
- Size
- 54 or 72 by 24 by 16
- Burner
- Linear
- Input
- 55,000
Outdoor GreatRoom Kenwood dining
- Size
- 80.69 by 49 by 30
- Burner
- 12 by 42
- Input
- 80,000
The Outdoor Plus Cabo Linear 56
- Size
- 56 by 38 by 16
- Burner
- 24
- Input
- 65,000
The Outdoor Plus Cabo Linear 90
- Size
- 90 by 38 by 16
- Burner
- 54
- Input
- 65,000
Prism Tavola 5
- Size
- 80 by 38 by 16
- Burner
- 24 H
- Input
- 65,000
Prism Tavola 6
- Size
- 90 by 38 by 16
- Burner
- 60 T
- Input
- 90,000
Prism Elevate (Classic Series)
- Size
- 80 by 37.75 by 15
- Burner
- 44 T
- Input
- 65,000
American Fyre Designs Milan Low Linear
- Size
- 72 by 16 by 16
- Burner
- 48
- Input
- 65,000, or 100,000 with Bluetooth control
American Fyre Designs Contempo LP Select Long
- Size
- 76 by 36 by 18.5
- Burner
- 48
- Input
- 65,000 propane
Real Flame La Valle 72
- Size
- 72 by 28 by 12
- Burner
- 40
- Input
- 120,000
Real Flame Geneva 72
- Size
- 72 by 42 by 14
- Burner
- 40
- Input
- 65,000
Paloform Nimbus
- Size
- 72 by 42 by 29
- Burner
- 36
- Input
- 60,000
Sources: Outdoor GreatRoom, The Outdoor Plus Cabo Linear, Prism Tavola and Classic Series, American Fyre Designs catalog, Real Flame La Valle, Paloform.
Prism's 110 inch Tavola, 38 inches wide, is the longest table I found. Prism's installation guide rates it at 90,000 Btu/h, and its product page says 90,000 in the description and 65,000 in the spec list, so confirm that one with Prism. Outdoor GreatRoom's burner page lists linear burners from 24 to 120 inches long by 12 wide and no Btu rating, so I can't say what its long burners draw.
Pans are long and narrow. Firegear's T burner pans are 6 inches wide, from 30 by 6 for the 24 inch burner to 126 by 6 for the 122 inch one. The Outdoor Plus's 90 inch Cabo has a 66 by 14 inch pan, 2 inches deep. The fire glass calculator takes a pan's length, width and depth.
Fuel varies by maker. HPC, Firegear and Outdoor GreatRoom list natural gas and propane versions of their burners or tables, Prism lists its Tavola and Classic Series linear tables as compatible with both, and American Fyre Designs' Contempo LP Select is propane only. The natural gas vs propane guide covers the choice.
Does a Long Burner Need a Bigger Gas Line?
Demand grows with every foot. HPC's 120 inch burner is 250,000 Btu/h, five times its 24 inch one at 50,000, so one long burner can be the largest load on a line. The makers put the sizing on the installer. The Outdoor Plus's fire bowl manual says fuel line sizing is the installer's responsibility and must supply the stated maximum Btu, and its troubleshooting table lists an undersized line as a cause of a low flame. Prism says a gas professional first works out the pipe size from the input, the pressure and the distance from the regulator. Firegear's chart tells you to consult a licensed plumber or gas fitter.
HPC lists natural gas supply at 3.5 to 7.0 inches of water column and propane at 8 to 11, and marks its linear burners for fixed piping systems only, so ask HPC before you plan on a portable cylinder. For a table that runs on one, Real Flame prints 3.5 hours on high from a 20 pound cylinder for its 120,000 Btu La Valle and 6.5 hours for the 65,000 Btu Geneva. The propane tank runtime calculator works out your own case, and the gas line sizing calculator shows what a given input asks of a pipe. A licensed gas fitter sizes the line.
How Much Clearance Does a Long Burner Need?
Some clearances step up with length. Firegear's Pro T manual asks for 96 inches of ceiling clearance on burners up to 44 inches and 120 inches from 56 inches up.
| Manual | Sides | Overhead |
|---|---|---|
| Firegear Pro T, 24 to 44 in. burners | 36 in. | 96 in. |
| Firegear Pro T, 56 to 122 in. burners | 36 in. | 120 in. |
| Real Flame La Valle 72 (120,000 Btu) | 48 in. | 60 in. from the top, and no overhead structure or vegetation |
| Real Flame Coden 72 (65,000 Btu) | 48 in. | No overhead structure or vegetation |
| Prism Tavola, all sizes | 4 ft | 6 ft |
| Outdoor GreatRoom tables | 24 in. from the burner edge | 72 in. above the burner |
Your own manual governs. The clearance checker lists more by input, and the fire code library covers your state.
Does Wind Affect a Linear Fire Pit?
Makers say yes. Real Flame's La Valle manual says windy conditions may push the flame out of the burn area or put it out, and that prolonged wind can damage the finish around the burner. Prism's Tavola guide says never to use its tables in windy conditions. The Outdoor Plus says to install a wind guard or adjust the flame height, and Firegear suggests a wind guard or overhead shelter in windy climates.
Glass helps. HPC says tempered glass guards help stabilize the flame without compromising visibility, and it offers a linear option. Outdoor GreatRoom's linear guard comes from 44.5 to 122 inches long by 15.5 wide, for its 12 inch wide burners, and the maker says it reduces wind effect. HPC also says to place a fire feature to avoid crosswind, and that a tight corner can create swirling air.
The listing standard tests for wind, and Intertek lists wind and rain among its tests. As Outdoor GreatRoom summarizes it, a burner must light and run safely at 10 mph and either shut down or run safely in a 31 mph gust. That is a safety test. It doesn't promise a flame that holds its shape. A long flame exposes more length to a crosswind, so I'd give a linear burner the most shelter on the site plan, and I found no wind speed that any maker gives for a steady flame.
How Should You Seat Around a Linear Fire Pit?
HPC puts seats typically 36 to 42 inches from the flame edge, says to keep at least 36 inches clear around traffic paths, and says linear burners, round pits and rectangular features create different visual dynamics, so seating should be oriented to suit. Firegear says to leave at least 36 inches around all sides of the pit and to use linear burners to define the edge of a patio or run along a feature wall. Prism says its 24 inch wide Tavola 72 Narrow suits opposing bench seating, and its 66 Slim suits tighter patios and linear seating. Outdoor GreatRoom's page pairs its Kenwood Long Bench, 68 inches long and 17.75 inches high, with the 80.69 inch dining table.
Here is a worked example with HPC's numbers. Take a 30 inch wide table with a centered 12 by 42 inch burner, like the Havenwood 62. The flame edge sits 9 inches inside the table edge, so seats 36 to 42 inches from the flame sit 27 to 33 inches from the table. Facing seats are then 84 to 96 inches apart, front to front. Along the length, add 36 inches at each end if the ends are a walkway, which makes a 62 inch table need about 134 inches. Seat the long sides and keep the ends open.
Before You Buy a Linear Fire Pit
- Get the burner length and the input rating as well as the table length.
- Compare the input with your gas line or cylinder, and have a licensed gas fitter size the line.
- Check the manual's overhead clearance against your roof or beam height.
- Plan for wind: a wind guard, a sheltered side and no tight corner.
- Measure the seating zone with HPC's 36 to 42 inches and the walkways with 36 inches.
- See the table height guide for chat and dining heights, and the BTU ratings guide for what the number means.
- Check local code and the installation manual for the exact unit.
We don't sell any of the brands named here yet. Every figure above comes from the maker's own document, linked where it appears.
Common Questions
How long should a linear fire pit be?
No standard sets it. Makers publish linear burners from 24 to 122 inches and tables from 54 to 110 inches. Size the table to your seating and your walkways: HPC puts seats 36 to 42 inches from the flame edge and says to keep 36 inches clear around traffic paths. Add those distances to the table's length and width before you choose.
How many BTU does a linear fire pit have?
It depends on the maker. HPC's linear burner is 50,000 Btu/h at 24 inches and 250,000 at 120. Firegear's Pro T is 50,000 to 200,000 on natural gas and 60,000 to 300,000 on propane. The tables above run 55,000 to 120,000. A table's rating does not follow its length, so check the rating plate.
Can a linear fire pit run on natural gas?
Yes. HPC, Firegear and Outdoor GreatRoom publish natural gas ratings for linear burners or tables, and Prism's Tavola and Classic Series linear tables are compatible with both fuels. Natural gas pressure for HPC's burner is 3.5 to 7.0 inches of water column. A licensed gas fitter sizes and connects the line.
Do linear fire pits need a wind guard?
Makers treat wind as a real limit. Real Flame says wind can push the flame out of the burn area or put it out, Prism says never to use its tables in windy conditions, and The Outdoor Plus says to install a wind guard or adjust the flame height. HPC says tempered glass guards help stabilize the flame. A guard helps, and a sheltered site helps more.
What gas line does a linear fire pit need?
One sized to the burner's full rated input, which grows with length: HPC's 120 inch burner is five times its 24 inch one. The Outdoor Plus makes the installer responsible for sizing the line to the stated maximum, and lists a line that is too small as a cause of a low flame. A licensed gas fitter sizes it.
How far should seats be from a linear fire pit?
HPC puts seating typically 36 to 42 inches from the flame edge for residential installs and says a larger fire feature may need a different distance. Your manual's clearance to combustibles is the floor, and it runs from 24 inches at Outdoor GreatRoom to 4 feet at Prism. On a long table, seat the long sides and keep the ends open as a walkway.
Sources
- HPC Fire Inspired (Hearth Products Controls), Linear Burners drawing (rev. 7/9/2024): lengths, recommended Btu for Linear and Torpedo, vent rules, supply pressures, fixed piping onlyChecked
- HPC Fire Inspired, Linear Burner Kits product page: lengths 24, 36, 48, 60, 72, 96 and 120 in., natural gas or propaneChecked
- HPC Fire Inspired, Wind Guards product page: guards for inserts of all shapes including a linear optionChecked
- HPC Fire Inspired, 5 Best Practices for Designing an HPC Outdoor Fire Feature (February 24, 2026): seating distance of 36 to 42 in. from the flame edge, 36 in. around traffic paths, seating orientation for linear burners, crosswind and corner placement, glass wind guardsChecked
- Firegear Outdoors, Pro T-Burners and Kits, Installation and Operating Instructions, REV. D: cover model table with input ratings (PDF p. 1); Table 1 burner lengths, pans and clearances, and Table 2 Btu (PDF p. 4); gas pressures and Fig. 1 (PDF p. 5); pipe sizing chart notes and licensed plumber or gas fitter (PDF p. 7)Checked
- Firegear Outdoors, Patio Design Ideas That Fit Real Life (blog): linear burners to define the edge of a patio or run along a feature wall, 36 in. around all sides of the fire pit, wind guard or overhead shelter for windChecked
- Outdoor GreatRoom Company, Kenwood and Brooks Linear Chat Height Gas Fire Pit Table product page: 61 by 31 by 20 or 21.5 in., 12 by 42 in. burner, 65,000 propane and 80,000 natural gasChecked
- Outdoor GreatRoom Company, Kenwood and Brooks Linear Dining Height Gas Fire Pit Table product page: 80.69 by 49 by 30 in., 12 by 42 in. burner, 80,000 BtuChecked
- Outdoor GreatRoom Company, Cove Concrete 54 and 72 Linear Gas Fire Pit product page: 54 or 72 by 24 by 16 in., 55,000 Btu LP and NGChecked
- Outdoor GreatRoom Company, Havenwood Linear Gas Fire Pit Table 62 in. product page: 62 by 30 by 24.5 in., 12 by 42 in. burner, 65,000 propane and 80,000 natural gasChecked
- Outdoor GreatRoom Company, Crystal Fire Plus Linear Gas Burner product page: 24 to 120 in. long by 12 in. wide, installation by a certified gas technicianChecked
- Outdoor GreatRoom Company, Linear Glass Wind Guard product page: 44.5 to 122 in. long by 15.5 in., fits its 12 in. wide Crystal Fire Plus burners, reduces wind effectChecked
- Outdoor GreatRoom Company, Gas Fire Pit Safety: Clearances to Combustibles and Glass Guards (blog, August 23, 2024): for most of its fire tables, 72 in. from the top of the burner, 24 in. from the burner trim to side walls, 8 in. below; high winds can blow out the flameChecked
- Outdoor GreatRoom Company, ANSI Z21.97 Standard Updates (blog, January 12, 2020): wind test of 10 mph and 31 mph as the maker summarizes the standardChecked
- Outdoor GreatRoom Company, Kenwood Long Bench product page: long bench 68 by 14 by 17.75 in., pair with the Kenwood Linear Dining tableChecked
- Intertek, Standard: ANSI Z21.97 Outdoor Decorative Gas Appliances: tests include input rate, clearance to combustible construction, wind and rainChecked
- The Outdoor Plus, Cabo Linear Fire Pit specification sheet: 56, 66 and 90 in. long, 38 in. wide, 16 in. high, burners 24, 24 and 54 in., 65,000 Btu, pans 36 by 14, 36 by 16 and 66 by 14 in., 2 in. deepChecked
- The Outdoor Plus, Fire Bowl Installation Manual, Match Lit (FB-ML-M, 2026): fuel line sizing is the installer's responsibility (PDF p. 8), low flame from an undersized line, and a wind guard or flame height adjustment for wind (PDF p. 13)Checked
- Prism Hardscapes, Tavola Series product page: Tavola 5 and 6 dimensions, burners and Btu; 66 Slim and 72 Narrow descriptions; Tavola 110 at 38 by 110 in., 90,000 Btu in its description and 65,000 in its spec listChecked
- Prism Hardscapes, Classic Series product page: Elevate fire table, 37.75 by 80 by 15 in., 44 in. T burner, 65,000 Btu, propane or natural gasChecked
- Prism Hardscapes, Tavola Series Installation Guide: never use in windy conditions (PDF p. 11); 4 ft sides and 6 ft top clearance, 90,000 Btu/h for the Tavola 6 and 110, and a gas professional sizes the pipe (PDF p. 12)Checked
- American Fyre Designs, 2026 Product Catalog, printed pp. 7 to 9: Contempo LP Select Long and Milan Low Linear firetables, dimensions, 48 in. linear burners, BtuChecked
- Real Flame, La Valle 72 in. Rectangle Propane Fire Table product page: 72 by 28 by 12 in., 40 in. burner, 120,000 Btu, 3.5 hours on high from a 20 lb tankChecked
- Real Flame, Geneva 72 in. Rectangle Propane Fire Table product page: 72 by 42 by 14 in., 40 in. burner, 65,000 Btu, 6.5 hours on high from a 20 lb tankChecked
- Real Flame, La Valle 72 in. Rectangle owner's manual (1591LP), linked from Real Flame's product page: 120,000 Btu/h rating (PDF p. 2); clearance of 60 in. from the top and 48 in. on all sides, no overhead structure or vegetation, and windy conditions warning (PDF p. 4)Checked
- Real Flame, Coden 72 in. Rectangle owner's manual (2060LP), linked from Real Flame's product page: 65,000 Btu/h (PDF p. 2), 48 in. clearance on all sides and no overhead structure or vegetation (PDF p. 4)Checked
- Paloform, Nimbus Firepit Table product page: 72 by 42 by 29 in., 36 in. linear burner, 60,000 Btu/hChecked
About the Author
James Darren Writes the Firepit HQ guides on fire features, fuel and fire codes. Every figure in them is cited to its source with the date it was checked.
