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Custom Rectangle DIY Fire Pit Kit 39″ x 21″ x ?

SKU: CUSTOM KIT 39"R-12-NG
Do not miss the opportunity to create your own fire pit project with our Customizable DIY Kits.
1 Frame Height: Select Frame Height
2 Gas Type: Select Gas Type
Regular price $2,289
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Discover Our Customizable DIY Kits

New! Rectangular fire pit kit with stainless steel linear burner tube and trough-style burner pan. An easy way to make your own gas fire pit.

  • 39″ x 21″ Custom Powder-Coated Steel Frame with cut-out to support 24″ linear style burner which threads onto the burner pan.
  • 24″ Linear Stainless Steel Torpedo Burner 
  • Manual 1/4 Turn Valve for a match-lit system
  • (2) 24″ High Capacity Flex Lines, 1  is whistle free.
  • 150,000 BTU's
  • Ready for your finish materials.
  • Just add cement board and your finish materials.

To determine the actual finished fire pit size:

  1. For Width Add: 1/2″ per side for cement board, 2″ per side for stone veneer, 2″ per side for top material overhang. (ie: 27″+1″+4″+4″=36″)
  2. For Height Add: 1/2″ for cement board, ?” for the thickness of top material. (ie: 16″ frame height + 1/2″cement board + 2″ stone top = 18 1/2″)

These dimensions are approximate and will vary dependent on the actual material thicknesses you use.

Custom Product: Will ship in 4 weeks

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What will the final size of the fire pit be once finished?

The frame measures 39 inches by 21 inches. Final exterior dimensions will depend on cement board thickness, veneer material, and top cap overhang used during finishing.

What fuel types does this kit support?

This kit can be configured for natural gas or liquid propane, depending on the option selected at purchase. Always verify gas requirements and local code compliance before installation.

Is this kit suitable for DIY installation?

Yes. The kit is designed for DIY builders and professionals. Basic construction skills are helpful, and final gas connections should be completed by a licensed professional in accordance with local regulations.

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SKU CUSTOM KIT 39"R-12-NG
Manufacturer Colorado Hearth & Home
Weight 149.0 lb
Shape Rectangle

A Compact Custom Fire Pit Foundation

The Custom Rectangle DIY Fire Pit Kit 39″ x 21″ is designed for smaller outdoor spaces where clean lines and reliable flame performance still matter. This kit provides a durable steel frame and matched burner components, giving you a solid foundation to build and finish a custom fire pit that fits patios, courtyards, and tighter layouts.

A fire pit built with Custom Rectangle DIY Fire Pit Kit 39″ x 21″ x ?

Sized for Smaller Rectangle Gas Fire Pits

With a 39″ x 21″ steel frame, this kit is ideal for compact fire pit designs while still accommodating a linear burner for even flame distribution and visual impact.

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A fire pit built with Custom Rectangle DIY Fire Pit Kit 39″ x 21″ x ?

Complete DIY Fire Pit Kit

Includes a powder-coated steel frame, stainless steel burner and burner pan, gas fittings, and installation components selected to work together seamlessly, reducing guesswork during your build.

Outdoor patio with 48″ x 30″ Rectangle Custom Stone Gas Fire Pit, chairs, and pergola at dusk.

Built for Custom Finishes

Designed to be finished with stone, tile, stucco, or other masonry materials. The open frame structure allows you to customize the exterior while maintaining proper support and airflow.

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