Thompson gas fireplace - Sierra Flame

The Thompson 36 – Direct Vent Linear Gas Fireplace

A direct vent fireplace that can really put out the heat – at 36″ x 15″ it is a compact fireplace that has on output of 26,000 BTU’s. Available in deluxe models only and in natural gas and propane.

Sierra Flame gas fireplace

Thompson 35 specs


Fireplace Features:

  • Black trim & safety barrier (both attached to unit)
  • 26,000 BTU
  • Electronic ignition
  • Tempered glass
  • 100% Safety shut off
  • Top vent only
  • Black Porcelain panels
  • 4 piece log set
  • Deluxe digital remote control
  • Fan kit
  • Modulating valve

The Sierra Flame Advantage

All Sierra Flame units are manufactured with the highest quality parts available, from the smallest component to the 18-20 gauge body and stainless steel burner. Our units are designed for ease of installation and servicing and our focus is on keeping the styles fresh and current. As well, our realistic and exceptionally large flame is a noticeable feature that sets us apart from the competition. Our standard units include upgrades that would be costly add-ons with other suppliers like the remote control, quality fire glass media and decorative rock set. We offer to you a finely tuned selection of units — focusing on quality not quantity and hope that you choose a Sierra Flame fireplace to enjoy for years to come!


Optional Accessories

  • Termination kit
  • Extra decorative rock media – 3 piece set
  • Natural gas conversion kit
  • Hard pipe vent
  • Flex vent to hard pipe adaptor

Framing Dimensions:

  • 38″ W x 37″ H x 15″ D

Fuel Options

  • Standard Natural Gas
  • Liquid Propane option is available

Outside Surround Dimensions – Thompson

Surround Dimensions Diagrams

Model number Outside Surround Dimensions (H x W) Description
Attached to unit 27.76 x 37.87 Black trim & safety barrier

Gas Specifications

Framing Dimensions Viewing Area BTUs (NG) AFUE / P.4
(NG Efficiency)
Hi Low
37” H x 38” W x 15” D
16-1/2” H x 29” W
125 lbs.


Ceiling /
Mantle Height
4” flex vent on exhaust side
7” flex vent on the air intake side
Internl ceiling= 52” from top of unit
Mantel height=42”

**Venting – Any certified 2 ply flex piping can be used. Certified on Duravent, Selkirk, Metal Fab, ICC


DISCLAIMER - Blue Flames
Blue flame lights will no longer be available on units built after July 01, 2021. The blue light has been replaced with a bright yellow, orange and red light combination to offer you a more realistic flame effect. We reserve the right to modify and upgrade our product at any time without prior notice.


Flames and flame colors on the website may appear differently in real life. To view the most accurate representation of our regular flame sets, please visit your nearest dealer.

We reserve the right to update products, specifications and dimensions are subject to change. Please refer to the product manual to verify measurements and clearance requirements. All local building codes must be followed.