About this product
HPC Fire 24-Inch Square Flat Fire Pit Insert - Electronic Ignition, 8 Configurations
The HPC Fire 24-Inch Square Flat Fire Pit Insert is a stainless steel outdoor gas fire feature designed for installation in a compatible recessed fire pit enclosure.
Available with PENTA18 or TOR-PENTA18 burner configurations, the series offers listed heat outputs of 125,000 BTU or 140,000 BTU, respectively.
Choose from Natural Gas (NG) or Liquid Propane (LP), with either 120VAC or 24VAC hot surface electronic ignition.
The eight available configurations let homeowners, contractors, and outdoor living designers match the insert to the planned fuel supply, electrical system, and burner requirements.
Quick Answer: Which HPC Fire 24-Inch Insert Should You Choose?
Choose PENTA18 for the standard 125,000 BTU burner configuration. Choose TOR-PENTA18 for the 140,000 BTU TOR burner configuration.
After selecting the burner, choose the NG or LP fuel version and the 120VAC or 24VAC ignition version that matches your installation requirements.
All eight models are designed for outdoor recessed fire pit installations. Confirm enclosure dimensions, ventilation, drainage, clearances, gas supply, and electrical requirements before ordering.
Product InformationKey Features of the HPC Fire 24-Inch Square Flat Fire Pit Insert
The HPC Fire Square Flat series combines a recessed stainless steel insert design with manufacturer-configured gas burners and electronic ignition systems.
304 Stainless Steel Construction
The manufacturer describes this insert family as using 18-gauge, 304 stainless steel construction. Its flat profile is intended to integrate into a properly designed outdoor fire pit enclosure.
Hot Surface Electronic Ignition
Each of the eight listed configurations uses hot surface electronic ignition. Select the voltage specified by the manufacturer SKU rather than assuming all electronic ignition inserts use the same power supply.
Two Burner Configurations
The PENTA18 configuration is listed at 125,000 BTU. The TOR-PENTA18 configuration is listed at 140,000 BTU.
Natural Gas and Liquid Propane Options
Separate manufacturer SKUs are provided for NG and LP installations. This allows buyers to select a configuration intended for the available fuel source.
Outdoor Recessed Installation
The flat insert design is intended for installation within a compatible outdoor fire pit structure, subject to the manufacturer's enclosure, ventilation, drainage, and clearance requirements.
CSA-Certified Product Family
The manufacturer identifies the Square Flat electronic ignition insert family as CSA-certified. Verify the applicable certification and listing information for the exact SKU and installation.
HPC Fire 24-Inch Square Flat Insert: All 8 Variants Compared
The primary differences between these configurations are the burner design, listed BTU output, fuel type, and electrical supply.
HPC Fire 24-Inch Square Flat Insert Technical Specifications
The following specifications summarize the shared characteristics of this product family and the differences between its eight configurations.
Choose Your HPC Fire 24-Inch Insert Configuration
Use the complete manufacturer SKU when selecting or verifying a Shopify variant. The TOR prefix identifies the TOR-PENTA18 burner; NG and LP identify the fuel; and the final suffix identifies the ignition voltage.
Burner: PENTA18
Input: 125,000 BTU
Fuel: Natural Gas
Power: 120VAC
For natural gas installations with a compatible 120VAC electrical supply.
Burner: PENTA18
Input: 125,000 BTU
Fuel: Natural Gas
Power: 24VAC
For natural gas installations using the manufacturer-approved 24VAC power supply arrangement.
Burner: PENTA18
Input: 125,000 BTU
Fuel: Liquid Propane
Power: 120VAC
For propane installations with a compatible 120VAC electrical supply.
Burner: PENTA18
Input: 125,000 BTU
Fuel: Liquid Propane
Power: 24VAC
For propane installations using the manufacturer-approved 24VAC power supply arrangement.
Burner: TOR-PENTA18
Input: 140,000 BTU
Fuel: Natural Gas
Power: 120VAC
TOR burner configuration for natural gas installations with compatible 120VAC power.
Burner: TOR-PENTA18
Input: 140,000 BTU
Fuel: Natural Gas
Power: 24VAC
TOR burner configuration for natural gas installations using the approved 24VAC power arrangement.
Burner: TOR-PENTA18
Input: 140,000 BTU
Fuel: Liquid Propane
Power: 120VAC
TOR burner configuration for propane installations with compatible 120VAC power.
Burner: TOR-PENTA18
Input: 140,000 BTU
Fuel: Liquid Propane
Power: 24VAC
TOR burner configuration for propane installations using the approved 24VAC power arrangement.
Natural Gas vs. Propane and 120VAC vs. 24VAC
Fuel and voltage are essential compatibility decisions when ordering an electronically ignited fire pit insert.
Natural Gas (NG)
Select an NG-designated SKU only for an installation designed for the appropriate natural gas supply.
Verify gas supply capacity, connection requirements, and the manufacturer's installation instructions.
Liquid Propane (LP)
Select an LP-designated SKU for the intended propane system.
Do not assume an NG insert can operate on LP without manufacturer-approved conversion instructions and components.
Electrical Supply
The 120VAC and 24VAC ignition systems are separate configurations.
The manufacturer catalog identifies a 24VAC 100W HPC/SEBCO supply for insert-only 24VAC applications. Verify the correct supply and installation requirements.
Outdoor Installation, Ventilation and Clearance Requirements
HPC Fire Square Flat inserts are designed for installation within properly constructed outdoor fire pit enclosures.
The manufacturer family documentation identifies several important installation considerations.
Clearance Beneath the Insert
Manufacturer documentation calls for a minimum 2-inch clearance beneath the insert.
Enclosure Ventilation
The manufacturer family guidance calls for ventilation on at least two sides and at least 50% free air space within the enclosure.
Combustible Clearances
Required clearances vary by insert size and installation. Manufacturer documentation discusses a range of 36 to 48 inches across sizes.
Use the specific clearance requirements for the selected 24-inch configuration rather than treating this family-wide range as a final installation dimension.
Drainage and Support
The manufacturer describes drainage weep holes, a raised burner hub, and welded gas fittings as features of this insert family.
Verify that the enclosure provides suitable support, drainage, ventilation, and access for the intended installation.
Electrical and Gas Planning
Confirm the fuel supply, ignition voltage, required power components, and utility routing before completing the enclosure.
Installation should be performed by qualified professionals in accordance with the manufacturer's instructions and applicable local requirements.
What to Check Before Buying an HPC Fire 24-Inch Insert
Before ordering, verify the specifications of the exact model rather than relying on product images or the shared 24-inch size designation.
Choose the Burner
Confirm whether your project calls for the PENTA18 burner rated at 125,000 BTU or the TOR-PENTA18 configuration rated at 140,000 BTU.
Confirm the Fuel
Match the NG or LP designation on the manufacturer SKU to the intended gas supply.
Verify Ignition Voltage
Select 120VAC or 24VAC based on the intended electrical arrangement and manufacturer requirements.
Check Enclosure Compatibility
Verify cutout dimensions, support, ventilation, drainage, and combustible clearances.
Verify Included Components
Confirm the included ignition components, controls, fire media, electrical accessories, and any separately required items.
Do not assume a remote or Hi/Lo flame control is included.
Review Warranty and Safety
Confirm current manufacturer warranty terms, applicable certifications, and model-specific safety instructions before purchase and installation.
Frequently Asked Questions About HPC Fire 24-Inch Square Flat Fire Pit Inserts
The standard PENTA18 configurations are listed at 125,000 BTU. TOR-PENTA18 configurations are listed at 140,000 BTU. Burner choice is part of the manufacturer SKU; the two configurations should not be assumed interchangeable.
Yes. These eight SKUs include separate natural gas and liquid propane configurations. Select the version matching the intended fuel supply. Do not assume fuel conversion is possible without approved manufacturer instructions and components.
Both are hot surface electronic ignition configurations, but their electrical requirements differ. The 24VAC models need the appropriate manufacturer-approved low-voltage power supply arrangement. Confirm the required components for the exact SKU.
The eight SKUs listed here do not include a Hi/Lo designation, and the supplied manufacturer price list does not establish that a remote is included. Do not assume either feature without confirmation.
An existing enclosure may be suitable only after verifying the opening dimensions, support, drainage, ventilation, combustible clearances, gas supply, and electrical requirements against the current manufacturer instructions.
The manufacturer catalog describes lifetime warranty coverage for burners in this insert family. This does not establish a lifetime warranty for every component. Confirm the current written warranty terms and exclusions.
Choose the Right HPC Fire 24-Inch Square Flat Insert
The right configuration depends on three primary decisions: burner design, fuel type, and ignition voltage.
Choose the PENTA18 for the 125,000 BTU configuration or the TOR-PENTA18 for the 140,000 BTU configuration.
Next, select the Natural Gas or Liquid Propane version and the 120VAC or 24VAC ignition system that matches the installation.
Before ordering, confirm the complete manufacturer SKU, enclosure dimensions, clearances, ventilation, drainage, fuel supply, electrical requirements, and separately required components.
With the correct specifications verified, you can select the HPC Fire 24-Inch Square Flat Fire Pit Insert configuration that fits your outdoor project.
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.
