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Warming Trends  |  SKU: FL3634

Warming Trends Stainless Steel 36x3/4-Inch Flex Line FL3634

$135.00 $178.20

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.

Most items ship within 1 business day. Manufacturer-direct items may take up to 2 weeks. Call us before ordering if needed immediately. 718-326-4328

Pickup available at Maspeth, NY Showroom

Usually ready in 2-4 days
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  • Flat-rate shipping from $19.95. Free on orders over $999.
  • 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.
Questions about fit, venting or power? Talk to the team that installs it. Mon to Fri 9 to 5, Sat 10 to 3.
Call 718-326-4328 Free Consultation

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

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

Call for a free quote 718-326-4328

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
  • 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.

Description

Available Sizes: Warming Trends Stainless Steel 36 in. Flex Lines

1/2 in. (FL3612) | 3/4 in. (FL3634) (Current Size)

Same Warming Trends part; size differs. Match the gas line size of your installation.

The Warming Trends FL3634 is a 36 in. long, 3/4 in. stainless steel flex line, male to male, that carries gas from the key valve to the burner plate coupling in a built-in fire pit. It is listed in the Warming Trends parts list (2020 manual).

Features

  • Stainless steel construction
  • 36 in. long, 3/4 in. diameter
  • Male to male ends (parts list)
  • 3/4 in. ID, 1 in. OD (listing)
  • Weight: 5 lbs (listing)

Key Specifications

Model FL3634
Type Stainless steel flex line
Length 36 in.
Diameter 3/4 in. ID, 1 in. OD (listing)
Ends Male x male (parts list)
Weight 5 lbs (listing)

Warming Trends Authorized Dealer

What Is Included and What You Will Need

  • Included: one FL3634 flex line, per current listing
  • Used with: a 3/4 in. key valve and, on 300K BTU and up systems, two lines with the FIT300 kit
  • Sold separately: key valve, fittings and burner

Installation Notes

The June 2026 manual says to connect flare fittings without thread sealant, inspect flex lines for punctures or breaks, and leak test after installation. Have a licensed gas fitter do the work. In New York City, outdoor gas fire features need NYC Fuel Gas Code and DOB approval, and residential propane is restricted by the NYC Fire Code.

Book a design consultation to plan a new fire pit or fire table.

Documentation

Frequently Asked Questions

How many do I need?

One for most systems; dual flex line systems of 250K BTU and up use two.

Is a 1/2 in. version made?

Yes. Warming Trends lists the FL3612 for 1/2 in. systems.

Related reading: Gas fire pit buying guide, Outdoor fireplace buying guide.

Warranty

Warming Trends gives its CROSSFIRE brass burners a full lifetime warranty; other Warming Trends products may carry separate terms, which we confirm when you order.
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