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Sierra Flame – Lyon – 4 Sided See Through Gas Fireplace



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Free Shipping On Order Over $499


Lyon – 4 Sided See Through Gas Fireplace – Full 360° View – by Sierra Flame

The Lyon 48” brings the-see thru linear gas fireplace a wonderful new look! Lyon gives you no screens, safe to touch glass, and an incredibly mesmerizing flame, you will love the Lyon.

You can connect any room in your house with this fireplace, creating a flow in your home from setting to setting.

•  Double Glass & Screen Free •  All Wood Framing
•  4 Sided See Through Unit – Full 360° View •  No Concrete Board Required
•  Available Size – 48” •  Able to Finish with Combustible Around the Fireplace
•  Up to 32,500 BTU on high & 21,000 BTU on low
  • Double Glass, & Screen Free
  • 4 Sided See Through Unit – Full 360° View
  • 32,500 BTU on high & 21,000 BTU on low
  • All Wood Framing
  • Concrete Board Required
  • All Wood Framing
  • Able to Finish with Combustibles around the fireplace

No Limitations

The Technology

  • All Contained within the fireplace
  • No Gaps
  • No Louvres
  • No Heat Dump
  • Wood and Drywall – Combustibles Okay
  • Quick and Simple Installation.  – No technician required for cleaning inside the glass

No Gap
With a lot of fireplaces, they need to create an escape for the heat to vent out. To do this they leave a gap at the top of the fireplace wall to create a crown to hide the opening. A gap is not necessary.

No Intake or Exhaust Louvres
Your wall will not have any intake or exhaust louvres to break up the look.

No Heat Dump
There are no vents required behind the wall of the fireplace to dump the built up heat.

Combustibles Okay
Everything is contained within the firebox. Able to finish with combustibles around the fireplace. No special concrete board or metal studs

Glass Viewing Area:
Lyon 48 NG – 15.34” H x 45.16” W

Side View Area Dimensions:
Lyon 48 NG – 15.34” H x 13.40” W


Now you can enjoy:

Clear View: Double wall glass technology
Clear View has done away with the need for distractive safety screens. The double shield glass, protects hands from burning, while you can enjoy uncompromised views of your stunning fireplace.

Warm Glass System: Safety touch glass
The Warm Glass System, skillfully brings the temperature of the glass down below the stringent standard of 172 degree, while still allowing radiant heat to efficiently heat your room.

Easy Clean: No technician required
With the easy maintenance glass removal system, you won’t need a service technician to come and clean our fireplace viewing glass area.


Gen Term Kit – Termination Kit -5″ & 8″ Venting
TTRK 5&8 – Duravent 5 PC Through the Roof Kit
TTRK 5&8-S – Duravent 5 PC Through the Roof Kit -Steep

Model BTU’s Vent Height Width Depth Vewing Area Side Vew Area
Natural Gas Propane Actual Framing Actual Framing Actual Framing Height Width Height Width
Lyon 48″ Hi 32,500 N/A Top 34.61” 38.52” 49.39” 51.24” 22.79” 23.5” 15.34” 45.16” 15.34″ 13.40″
Hi 21,000 N/A 5” & 8” 15.53″ 39.17″ Single Side View




Lyon tech specs

Manufacturer's Documentation



Tech Specs