About this product
HPC Fire PENTA31 31" Standard Penta Burner Match-Lit Round Fire Pit Insert – Small-Tank LP
The HPC Fire PENTA31 31" Standard Penta Burner Match-Lit Round Fire Pit Insert – Small-Tank LP is a CSA-certified outdoor fire pit insert built from #304 stainless steel for custom built-in enclosures. This page is intentionally dedicated to the standard penta burner configuration, with a maximum listed input of 65,000 BTU. This product page is for the Liquid Propane configuration shown in the variant selector.
Before You Buy
Verify These First
- You need a 31" round bowl insert rather than a flat-pan or other fire-pit geometry.
- You want the standard penta burner shown on this page.
- The project specifically requires the small-tank Liquid Propane configuration.
- The project can accommodate up to 65,000 BTU input for the selected configuration.
- The enclosure can provide the required ventilation, drainage, gas access, service access, and clearances.
- The installation is outdoors and will follow the exact manufacturer drawing and local codes.
Do Not Assume
- That the Standard Penta and Torpedo Penta burner versions are interchangeable product pages.
- That fuel type can be changed without ordering the correct fuel-specific SKU.
- That a finished fire-pit enclosure, fire media, wind guard, or cover is automatically included.
- That catalog dimensions replace the model-specific installation drawing.
- That modifying the appliance will preserve certification or warranty.
PENTA31 31" Overview
This model is designed for a built-in outdoor enclosure where the round bowl-pan format, selected burner architecture, fuel supply, ignition method, and installation requirements have all been verified before ordering.
HPC's patented five-lobe Penta geometry is designed to concentrate flame toward the center for a natural campfire-style presentation while using less fuel to reach comparable flame height than a conventional fire ring.
The round bowl pan includes a 1.25" lip intended to rest over the surrounding enclosure surface. HPC also identifies a raised burner hub and drainage weep holes as part of its outdoor water-management design.
PENTA31 at a Glance
Round Fire Pit Insert
Standard Penta Burner
Match-Lit
Liquid Propane
#304 Stainless Steel
Outdoor Built-In
Insert Fit & Burner Configuration
The insert diameter, burner size, burner architecture, maximum input, and enclosure design must be checked independently before ordering.
Key Features
Designed for residential and commercial outdoor fire-feature applications.
The supplied catalog specifies #304, 18-gauge stainless steel for the round bowl pan.
Raised-hub construction and weep holes are designed to reduce water accumulation in outdoor installations.
HPC's patented five-lobe Penta geometry is designed to concentrate flame toward the center for a natural campfire-style presentation while using less fuel to reach comparable flame height than a conventional fire ring.
The bowl-pan design includes a 1.25" lip for installation over a properly constructed enclosure.
HPC states that its CSA-certified inserts are fully assembled and 100% burn tested.
Fuel, Ignition & Control Configuration
Fuel Type is the Shopify variant on this product page. Burner architecture and voltage, where applicable, are intentionally fixed at the product-page level.
Liquid Propane
Small-tank Liquid Propane configuration. Use the LP-ST SKU exactly as specified.
Ignition & Controls
Match-lit operation uses a manual key valve and an external long lighter. It does not require household electricity for ignition. This is the simplest control format in the supplied HPC round-bowl range.
Variant Reference
Installation, Ventilation & Safety Requirements
This is a built-in outdoor fire pit insert, not a complete freestanding fire pit. The enclosure must provide appropriate support, ventilation, drainage, gas access, service access, and required clearances.
Enclosure Ventilation
For applicable enclosures at or below 200,000 BTU, the supplied HPC drawing calls for two 18 sq. in. vents on opposing sides.
The supplied catalog also calls for ventilation on at least two sides and a minimum 50% free-air space within the enclosure.
Clearances & Access
HPC lists a minimum 2" clearance below the insert and 36"–48" clearance to combustibles depending on insert size and application. Confirm the exact model drawing before construction.
What’s Included
Manufacturer resources for the applicable match-lit kit identify the burner, round bowl pan, manual valve and key hardware, flange, flexible gas connection, and related fittings. The finished enclosure and decorative fire media are not stated as included with the insert.
Important Before You Buy
- Outdoor use only.
- Confirm the correct Fuel Type before ordering.
- Gas piping and any flexible connector must be sized and rated for the selected SKU’s maximum BTU input.
- Clearances, ventilation, drainage, and service access must be incorporated into the enclosure design.
- California Proposition 65: the supplied manufacturer catalog states that this product can expose users to lead and chromium.
PENTA31 Specifications
Manufacturer Documentation & Technical Resources
The supplied 2026 HPC Outdoor Living Product Catalog directs installers and specifiers to HPC product references for instructions and drawings. Review the exact documentation for the selected SKU, fuel, ignition, and voltage before installation or service.
Flame Authority Product Guidance
The HPC Fire PENTA31 31" Standard Penta Burner Match-Lit Round Fire Pit Insert – Small-Tank LP is best suited to an outdoor built-in project that specifically calls for a 31" round bowl insert with the standard penta burner and match-lit.
The most important ordering checks are the burner architecture, Fuel Type, maximum BTU input. These choices affect gas supply, controls, enclosure planning, and installation requirements.
Do not select the insert by diameter alone. Confirm the exact SKU, burner, fuel, ignition, gas-supply capacity, enclosure ventilation, clearances, and manufacturer installation requirements before purchase.
PENTA31 FAQs
No. This LP-ST configuration is specifically for a small liquid-propane tank; choose a different product configuration for Natural Gas.
This page is only for the standard penta burner. The other burner architecture is intentionally listed on a separate product page.
No. Match-lit operation uses a manual gas valve and an external lighter rather than an electrical ignition system.
No. HPC identifies these certified fire pit inserts for outdoor use only.
The enclosure must meet the ventilation requirements for the selected BTU input and installation. Do not build or close the enclosure until the exact model drawing and local code requirements have been verified.
The supplied resources do not state that decorative fire media is included with this insert. Do not assume media is included unless it is specifically listed with the ordered SKU.
Final Before-Order Checklist
Confirm
- Model family: PENTA31.
- Insert size: 31" round bowl.
- Burner page: Standard Penta Burner.
- Ignition: Match-Lit.
- Maximum listed input: 65,000 BTU.
- Small-tank Liquid Propane configuration is required.
- Outdoor built-in installation is appropriate.
- Enclosure ventilation, drainage, clearances, and service access can be met.
- Gas piping and connectors are sized for the selected SKU.
- The manufacturer instructions and local codes will be followed.
Avoid These Ordering Errors
- Ordering the Standard burner page when the Torpedo burner is required, or vice versa.
- Ordering the wrong Fuel Type.
- Treating this insert as a complete freestanding fire pit.
- Assuming decorative media or enclosure accessories are included.
- Closing the enclosure before verifying ventilation and service access.
- Modifying the certified appliance or ignoring the model-specific installation instructions.
Description supplied by Flame Authority through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
