Sierra Flame Lyon 48" 4 Sided See-Through Natural Gas Fireplace

The Sierra Flame Lyon 4-Sided See-Through Gas Fireplace redefines what a modern fireplace can be. Designed with a full 360° viewing experience, the Lyon allows you to connect multiple spaces effortlessly, creating visual flow and architectural impact from every angle. With no screens, no louvers, no gaps, and no heat dumps, it delivers a clean, uninterrupted flame presentation that feels truly contemporary.

Featuring advanced double-wall glass technology, the Lyon offers a clear, screen-free view while remaining safe to the touch. Its fully contained firebox design allows finishing directly with combustible materials such as drywall or wood—no concrete board or metal studs required. Easy installation and simple maintenance make the Lyon an exceptional choice for modern homes seeking a bold, sculptural fire feature.

Features

• Four-sided see-through gas fireplace with full 360° flame visibility

• Available in a 48" size

• Screen-free double-wall glass for unobstructed views and safe-touch operation

• Seamless design with no gaps, louvers, or heat dumps

• Finish directly with combustible materials such as drywall or wood

• No concrete board required

• All-wood framing compatible

• Fully contained firebox technology

• Easy-clean glass system with no technician required

• Creates visual connection between multiple rooms

• Contemporary architectural centerpiece

• Clear View double-wall glass eliminates the need for safety screens

• Warm Glass System keeps exterior glass temperature below safety thresholds

• Easy-access glass removal for simple cleaning and maintenance

Heating Performance

• Maximum heat output: up to 32,500 BTU

• Minimum heat output: approximately 21,000 BTU

What's Included

• Leon 48" 4 Sided See-Through Gas fireplace unit

• Optional Accessories: Termination Kit (5" & 8" venting), Duravent Through-the-Roof Kit (standard/steep roof)

Specifications & Downloads