HPC Fire Square Flat Burner Insert – MLFPK18SQ-FLEX-NG

HPC Fire Square Flat Fire Pit Burner Insert - MLFPK18SQ-FLEX-NG

The Square Flat Fire Pit Burner Insert from HPC Fire

The most impressive flame on the market, these HPC's CSA certified fire pit inserts are made of durable steel and designed to be efficient and safe. 

Features

• Economical, flat design. 
• Meant for a recess mount within an enclosure 
• Fully assembled, commercial grade, CSA-certified fire pit insert
• Raised hub for water mitigation
• Welded gas fitting for strength
• Weep holes for drainage
• Fully assembled
• Commercial Grade 

Installation Considerations

1. Minimum of 2" clearance between bottom of insert and ground is required
2. 48" clearance to combustibles
3. Minimum (2) sides of enclosure ventilated
4. Minimum 50% free air space within enclosure
5. 24VAC models (available upon request) require HPC/SEBCO 24VAC, 100W power supply for inserts ONLY

Choose Your Burner

Standard Burner - don't think less of this burner because its "standard". HPC is known for their impressive flames, largely due to the success of their standard burner. It creates a robust, natural looking, full flame that will not disappoint. In most cases, this is the burner we recommend to customers.

SST Torpedo Burner - HPC created their torpedo burner by adding specially designed nozzles to the standard burner which propels the fuel to create a bigger flame. 

Which burner is right for you?

If you are looking for a full, natural looking fire, choose the standard burner. The torpedo burner is for those that want to max out their flame and are looking for more of a bonfire like aesthetic. 

Ignition & Control Options for your Fire Pit Insert

1. Match Lit - match lit fire pits are ignited simply by turning the key valve and lighting the gas with a lighter. 
2. Push Button - push button fire pits are controlled using a simple knob and button on a stainless steel valve box and features a flame-sensing system to turn off gas if flame is lost. 
3. Electronic Ignition On/Off - remote controlled ignition. On/Off control only. 
4. Electronic Ignition Hi/Low (Bluetooth) - control your fire pit from your smartphone or tablet. On/Off plus adjustable flame height control.

Customize Your Fire Pit with Media

Media enhances the overall appearance of your fire feature by making it look more natural, stylized, or by making the flames stand out more. 

Lava Rock (657): increase combustion while maintaining a classy look! The size of each rock varies from 1" to 2". 

Rolled Lava Stone (857S/M): Unique finish lava stones rolled smooth. Available in small or medium sizes. 

Ceramic River Rock Series (FPR84MC): A unique alternative to lava rock & fire glass. HPC's River Rocks are made from lightweight ceramic fiber and are gel casted. The durable design is great to withstand outdoor elements. Available in two styles: Black or Multi Color. 

Fire Glass (FPGL):  HPCs Fire Glass has a reflective surface that bends the light produced by the fire pit creating a mesmerizing fire experience. Available in multiple colors. 

Fire Logs (FLPL): Create the look of a traditional wood burning fire with HPC Outdoor Fire Logs. Choose from 3 styles: Arizona Weathered Oak, Aspen Birch, Western Driftwood. We recommend combining with Lava Rock. 

Accessories

Accessories to go with your fire pit. Use the media & accessory chart to make sure you choose the right size accessory for your fire pit. 

Vinyl Covers: Protect your fire pit from the elements when you are not using it. 

Wind Guards: HPCs Wind Guards are made of high quality glass that is designed to complement your fire pit and provide additional safety against active flames. Wind guards reduce flame disturbance cause by the wind and prevent loose items from getting too close to the fire. 

Install Collars: The flex form installation collar merges the gap between your fire pit structure and the insert pan for easy installation. The flexible install collar allows for an easy 3 step installation, saving you time with our one size fits all product. The collar can be formed to fit any shaped fire pit and offers an auto-centering feature with a curved lip.

 

Media & Accessory Chart 

Specifications

HPC Square Flat Burner Insert Resources

Manual

What our Experts Think

• High-Quality Construction – Made from durable #304 stainless steel, ensuring resistance to rust and extreme weather conditions.
• Efficient Flame Distribution – Features precision-engineered burner ports for an even, natural-looking flame.
• Match-Lit System – No need for electrical connections; simple and reliable manual ignition with a key valve.
• Easy Installation – Includes a whistle-free flex line, mounting bracket, and key valve for a hassle-free setup.

Q&A

Q: What is included with this fire pit burner insert?
A: The kit includes an 18" square flat pan, a stainless steel burner, a match-lit ignition system, and a flexible gas connection for natural gas (NG).

Q: What are the dimensions of this burner insert?
A: The flat pan measures 18" x 18", providing even flame distribution for a well-balanced fire.

Q: Is this burner compatible with propane?
A: This model is designed for natural gas, but an LP (propane) version is available separately.

Q: Can this burner be used in custom-built fire pits?
A: Yes, the flat design makes it ideal for custom fire pit installations, offering flexibility in setup.

Q: Is the stainless steel burner weather-resistant?
A: Yes, the high-quality stainless steel construction ensures durability and resistance to outdoor elements.

Q: What type of ignition system does this burner use?
A: It features a match-lit ignition system with an optional safety pilot for added security

Maintenance Tips

• Keep Burner Ports Clear – Remove dust, dirt, and debris for consistent flame performance.
• Inspect Gas Connections – Regularly check for leaks or blockages in the flex line.
• Use a Weather Cover – Protect from moisture, rust, and debris when not in use.
• Check Ignition System – Ensure match-lit or electronic ignition is working properly.
• Burn Only Approved Fuels – Use only natural gas to prevent damage and ensure longevity.