18" G21 Vent-Free Glass Burner NG

Some fireplaces warm a room. The Real Fyre 18" G21 Vent-Free Contemporary Glass Burner transforms one. Engineered for the discerning homeowner who refuses to compromise between form and function, this 30,000 BTU natural gas burner (27,000 BTU propane) delivers a mesmerizing, contemporary flame experience that turns any compatible fireplace into an undeniable focal point.

Built from commercial-grade 304 stainless steel, the G21 is as durable as it is elegant. At 18 inches and a burner depth of 10.5 inches, it's sized to fit a range of fireplace openings — requiring a minimum front width of 22 inches, rear width of 16 inches, depth of 13 inches, and height of 17 inches. If your space meets those dimensions, you're in for a showstopper.

The contemporary glass aesthetic is where this burner truly shines — literally. Designed to be used exclusively with Real Fyre Fyre Glass and Fyre Gems decorative media (7.5 lbs required), the G21 produces a luminous, dancing flame that dances through the glass media in a way traditional log sets simply cannot replicate. It's modern luxury, burning at a steady rhythm.

Safety is never an afterthought here. The G21 features a built-in Oxygen Depletion Sensor (ODS) pilot assembly that continuously monitors oxygen levels in the room and automatically shuts the burner off if levels drop below a safe threshold. Add ANSI certification and piezo ignition for reliable, tool-free lighting, and you have a system engineered to perform with confidence every single time.

Control comes standard with an on/off remote with standing pilot (-12 control), so you can ignite or extinguish your fire from across the room — because getting up from a perfectly warm spot should always be optional. For those who want even more precision, this burner is compatible with variable flame height control options including Bluetooth remote and electronic ignition remote configurations (sold separately).

A critical note for performance and peace of mind: the G21 is engineered and listed exclusively for use with Real Fyre gas logs, valves, controls, and accessories. Mixing brands — for media, controls, or components — voids all warranties, certifications, listings, and building code approvals. This isn't fine print; it's a commitment to a system that works exactly as intended, every time.

At $1,702.00, the Real Fyre G21 is an investment in atmosphere, craftsmanship, and years of effortless ambiance. Because a fireplace this good deserves a burner that can keep up.

• 30,000 BTU natural gas output (27,000 BTU propane) for powerful, consistent heat
• 18" contemporary glass burner crafted from durable 304 stainless steel
• Oxygen Depletion Sensor (ODS) pilot assembly for continuous indoor safety monitoring
• ANSI certified for verified safety and performance standards
• Piezo ignition for reliable, effortless lighting every time
• Includes on/off remote with standing pilot (-12) for convenient flame control
• Compatible with variable flame height controls including Bluetooth remote (sold separately)
• Requires 7.5 lbs of Real Fyre Fyre Glass or Fyre Gems decorative media
• Minimum fireplace requirements: 22" front width, 16" rear width, 13" depth, 17" height
• Burner depth: 10.5 inches; unit weight: 20 lbs
• Engineered exclusively for use with Real Fyre logs, valves, controls, and accessories
• Use of non-Real Fyre media or controls voids all warranties, certifications, and code approvals