Warming Trends Crossfire UPK Universal Paver Kit For 23-25-Inch Circular or Square Openings
Images & size shown are for reference only: colors may vary by screen, lighting, & natural material variation. See description for dimensions & finish options or call us to request a sample if an exact match is needed.
Warming Trends Crossfire UPK Universal Paver Kit For 23-25-Inch Circular or Square Openings - Natural Gas / Square is backordered and will ship as soon as it is back in stock.
Pickup available at Maspeth, NY Showroom
Usually ready in 2-4 days
- Free shipping on this item to most of the US, or free local delivery by our team. Most items ship within 1 business day.
- Factory-authorized Warming Trends dealer. You keep the full manufacturer warranty.
- 30-day returns, no restocking fee.
- Professional installation available across NYC, Long Island, Westchester, northern NJ and Greenwich/Stamford, CT.
Free & Flat Rate Shipping
Free & Flat Rate Shipping
- Orders Over $999 Ship Out Fast & Free
- Delivery typically takes 5 -7 transit days
- $19.95-$99.95 Flat-Rate Shipping on orders under $999
- Our team & trucks deliver locally within 60 miles of our showroom. (Tri-State NY,NJ,CT including all of Suffolk County)
- Free Shipping Applies to Contiguous US only - See our shipping page for exclusions e.g. ethanol fuel
Assembly & Installation
Assembly & Installation
Our company installs in the following areas: Manhattan, Queens, Brooklyn, Nassau, Suffolk, Staten Island, Bronx, & Westchester NY. Hudson, Union, Essex, & Bergen NJ. Greenwich & Stamford, CT. Check out our portfolio of projects we built!
WE OFFER INSTALLATION FOR THE PRODUCTS WE SELL BELOW
- Outdoor Kitchens
- Outdoor Fireplaces/Firepits
- Outdoor Pizza Ovens
- Gas Fireplaces
- Gas Inserts
- Gas Log Sets
- Fireplace Doors
- Fireplace Mantels
- Electric Fireplaces
- Water Vapor Fireplaces
- Ethanol Fireplaces
Call for a free quote 718-326-4328
Warranty
Warranty
Manufacturer's warranty their products only if they are purchased from an authorized retailer like us. If an issue occurs and the item was purchased from a 3rd party website i.e. Amazon, your claim may be denied. What this means for you as a customer? As a factory authorized & trained dealer for every brand on our website, you will maintain full manufacturer's warranty. Please click on the manufacturer's manual in the description for full warranty coverage information.
Returns
Returns
- No-Restock Fees
- 30-Day Return Policy
- The NYC Fireplaces Team wants you to love what it is that you've ordered! If for some reason you have an issue with your product, we offer a '30-Day Return Policy'.
- We allow returns on all new, unused, unassembled, and "resalable" items in their original packaging within 30 days of the delivery date for a refund (minus the original shipping costs, and the shipping costs you incur shipping the product back). Naturally, if your return is because of our error, you are not responsible for any shipping costs.
Warming Trends Crossfire UPK Universal Paver Kit For 23-25-Inch Circular or Square Openings - Natural Gas / Square is backordered and will ship as soon as it is back in stock.
Description
Description
Available Sizes: Warming Trends Crossfire UPK Universal Paver Kits
23 to 25 in. opening (Current Size) | 26 to 28 in. square opening | 29 to 31 in. opening | 39 to 41 in. opening
Same Crossfire UPK design sized to the fire pit opening. Choose the kit that matches your opening and select the same fuel and burner plate on the destination page.
Kit: 23 in. circular or 23 x 23 in. square plate for 23 to 25 in. openings; CROSSFIRE 120,000 BTU original-style burner about 13 x 13 in. (per listing)
The Warming Trends CROSSFIRE UPK120C23 / UPK120S23 universal paver kit converts a block fire pit with a 23 to 25 in. inside opening to gas. It pairs a CROSSFIRE original-style brass burner rated 120,000 BTU with a 23 in. circular or 23 x 23 in. square aluminum plate, a flex line kit, key valve extension tube and adjustable installation collars, so the burner can be set at the right height inside the block wall.
Choose plate shape (circular UPK120C23 or square UPK120S23) and fuel above. The blocks, vents and fire media are not included.
Features
- Fits 23 to 25 in. block fire pits
- CROSSFIRE original-style brass burner, 120,000 BTU
- 23 in. circular or 23 x 23 in. square aluminum plate
- Flex line kit, key valve extension and adjustable collars
- Match light with 1/4-turn key valve, no power needed
- Natural gas or propane
- 100% brass burner with a full lifetime warranty
Key Specifications
| Model | UPK120C23 / UPK120S23 |
|---|---|
| Burner | CROSSFIRE original style, 100% brass, about 13 x 13 in. (per listing) |
| Output | 120,000 BTU |
| Plate | 23 in. circular or 23 x 23 in. square aluminum |
| Opening | 23 to 25 in. |
| Ignition | Match light with key valve; ignition upgrades available |
| Gas inlet pressure | Match lit: NG 3.5 to 7.0 in. W.C.; LP 11.0 to 13.0 in. W.C. (June 2026 manual) |
Kit Dimensions
| Plate | 23 in. circular or 23 x 23 in. square |
|---|---|
| Opening | 23 to 25 in. inside the block wall |
| Burner | about 13 x 13 in. (per listing) |
| Overhead clearance | 84 in. minimum to combustibles (June 2026 manual) |
What Is Included and What You Will Need
- Included: CROSSFIRE 120,000 BTU burner, 23 in. circular or 23 x 23 in. square aluminum plate, flex line kit, key valve extension tube and adjustable installation collars, per current listing
- Not included: the block fire pit, vents and stone
- Required: venting on at least two opposing sides of the enclosure, such as the Warming Trends VENTBW vent kit
- Required, sold separately: fire-rated media such as Warming Trends black lava rock (BLR) or rolled lava rock (LRR)
- Optional ignition upgrades: PBIK3.0 push button spark ignition or Mercury (MERC) spark ignition with safety shutoff
- Required: a gas line with an exterior shutoff, run by a licensed installer
Installation Notes
Warming Trends requires venting on at least two opposing sides of the enclosure, 18 sq in. minimum each, and at least 84 in. of overhead clearance from combustible structures or materials (June 2026 manual). Never fill the cavity with gravel or concrete, keep the burner serviceable from above, fit a gas shutoff outside the fire feature, and have a licensed gas professional make the connection and leak test. Cover the burner with approved media no more than 1/2 in. above the jets. For New York City addresses, outdoor gas fire features and their gas piping fall under the NYC Fuel Gas Code and Department of Buildings permitting, and propane at residences is restricted by the NYC Fire Code, so the approval path must be confirmed before you buy. Book a design consultation and we will plan the block layout, venting and gas run.
Documentation
- Owner's Manual (2020)
- FLKV34 Flex Line and Key Valve Kit Instructions
- Warming Trends Owner's Guide and Instruction Manual (June 2026)
Frequently Asked Questions
Will it fit my block fire pit?
It is made for block fire pits with a 23 to 25 in. inside opening. Measure inside the wall before ordering.
Are vents included?
No. Add two vents on opposing sides, 18 sq in. minimum each.
Natural gas or propane?
Each burner is built for one fuel. Order the version that matches your supply; the two are not interchangeable without the correct parts.
Can I install this in New York City?
Possibly, but outdoor gas fire features and their gas piping need NYC Fuel Gas Code and Department of Buildings approval, and propane at residences is restricted by the NYC Fire Code. Talk to us before you order.
Related reading: Gas Fire Pit Buying Guide and Outdoor Fireplace Buying Guide.
Warranty
Warming Trends Full Lifetime Warranty on CROSSFIRE and other jetted brass burners, beginning on the date of purchase and transferable with proof of ownership; during the warranty period Warming Trends repairs or exchanges a defective burner without charge. Misuse, installation defects, accidents, modification, improper maintenance and indoor use are excluded, and installation services are not covered. Ignition systems carry separate terms: Platinum, Cobalt, Carbon and Mercury systems 3 years residential, push button systems 1 year residential (June 2026 manual).








