Sierra Flame Vienna 40" Natural Gas Direct Vent Linear Gas Fireplace
The Sierra Flame Vienna Series is the benchmark for contemporary linear gas fireplaces — engineered with patented no-gap, no-louver, no-heat-dump technology that keeps your wall completely clean and uninterrupted. Everything is contained within the firebox, combustible materials are permitted around the unit, and cleaning the glass requires no technician. Simplicity and sophistication, by design. Viewing Width: 36¾" W BTU Output (NG): 18,000–28,000 BTU BTU Output (LP): 17,000–25,000 BTU Framing: 36½" H × ~42" W × 18½" D Venting: Direct vent, top vent — 5" or 8" termination Design: No gap, no louvers, no heat dump — wood framing and combustibles permitted Glass: Double glass, screen-free, warm-touch — easy self-cleaning design A stunning, low-maintenance contemporary fireplace that fits any build style. Available in Natural Gas configuration.