Use code USA2026 for up to $1000 OFF select products
Use code USA2026 for up to $1000 OFF select products
About Us Contact Us Order Tracking
Skip to content
Real Fyre Contemporary 24-Inch Vent-Free Gas Fire Glass Set Insert

Real Fyre Contemporary 24-Inch Vent-Free Gas Fire Glass Set Insert

SKU G21-GL-24-12
$2,316.60
$1,782.00
Fuel Type

Notify me when back in stock

Fast & Free Shipping
Finance Options At Checkout
5-Star Customer Support
Get a Custom Quote Today
Message Us
Shipping: Please note that all Real Fyre authorized dealers have the same lead time as us.
Best Price Online: Find a better price? We'll match or beat it!

Real Fyre Contemporary 24-Inch Vent-Free Gas Fire Glass Set Insert

  • Dual-Sided Fire Viewing: The see-through fire glass design lets you enjoy the flame display from both sides of a peninsula or open-concept fireplace, making it a true living centerpiece.
  • Vent-Free Maximum Efficiency: With nearly 99% heat retention and no chimney required, this vent-free system keeps virtually all of its 36,000 BTUs working inside your home.
  • Modern Reflective Glass Design: Tempered fire glass media creates a sleek, contemporary flame effect that elevates any modern or minimalist interior far beyond a traditional log set.
  • Built-In Safety Sensor: The included Oxygen Depletion Sensor (ODS) continuously monitors air quality and shuts the unit down automatically, giving you peace of mind during indoor use.
  • Remote-Ready Ignition System: The millivolt ignition system is compatible with wall switches, thermostats, and handheld remotes, so you can control your fire without leaving the couch.
  • Customizable Glass Media Colors: Available in multiple fire glass colors, this insert lets you personalize the look of your fireplace to complement your existing décor and style.
Real Fyre Contemporary 24-Inch Vent-Free Gas Fire Glass Set Insert
Specifications
Electrical
  • Ignition Options: Manual safety pilot or millivolt remote-ready
  • Power Requirement: None for manual or millivolt systems
  • Remote Compatibility: Works with wall switches, thermostats, and handheld remotes (millivolt)
Flame & Controls
  • Flame Effect: Dynamic flames across a 24-inch see-through fire glass bed with glowing ember effect
  • Burner Type: Precision-engineered vent-free steel burner
  • Viewing: Dual-sided — visible from both sides of see-through or peninsula fireplace
General
  • Fire Glass Set Size: 24 inches
  • Minimum Fireplace Opening: Approximately 30 inches W x 18 inches H x 14 inches D
  • Heat Output: Up to 36,000 BTUs
  • Venting: Vent-free, no chimney required
  • Efficiency: Approximately 99%

Real Fyre Contemporary 24-Inch Vent-Free Gas Fire Glass Set Insert

The Real Fyre Contemporary 24-Inch See-Through Vent-Free Gas Fire Glass Set Insert delivers a modern, minimalist fire solution for open-concept or see-through fireplaces. Its reflective fire glass creates striking flame visuals that can be appreciated from multiple angles, transforming any space into a contemporary centerpiece.

The 24″ size provides full coverage for medium to wide fireplaces, offering both ambiance and efficient supplemental heating. Its vent-free design ensures that nearly all heat generated stays inside, making it a highly efficient option for zone heating.

Lifelike flames rise through the fire glass bed thanks to the precision-engineered burner, enhanced by a glowing ember effect. The unit is easy to operate with either a manual safety pilot or millivolt remote-ready ignition system, and the Oxygen Depletion Sensor (ODS) adds a layer of safety for indoor use.

Perfect for modern interiors, the Contemporary 24-Inch See-Through Fire Glass Insert combines efficiency, safety, and a sleek, visually striking flame display.

Real Fyre Contemporary 24-Inch Vent-Free Gas Fire Glass Set Insert Key Features & Benefits

  • See-Through Fire Glass: Provides dual-sided visual impact and modern aesthetic.
  • Medium Fireplace Coverage: 24″ size offers substantial visual and heat coverage.
  • Vent-Free Efficiency: Nearly all heat retained indoors, no chimney required.
  • Realistic Flames: Precision steel burner creates dynamic flame patterns.
  • Customizable Media: Available in multiple fire glass colors to match décor.
  • Safe Operation: Oxygen Depletion Sensor (ODS) included.
  • Flexible Ignition: Manual safety pilot or millivolt remote-ready options.
  • Remote-Ready: Compatible with wall switches, thermostats, and handheld remotes (millivolt).
  • Durable Construction: Steel burner and tempered glass ensure long-lasting performance.
  • Stylish Solution: Perfect for modern, minimalist, or open-concept interiors.

HEAT OUTPUT & FUEL

  • Heat Output: Up to 36,000 BTUs
  • Fuel Type: Natural Gas or Liquid Propane
  • Venting: Vent-free, no chimney required
  • Efficiency: ≈ 99%

BURN AREA

  • Fire Glass Set Size: 24″
  • Minimum Fireplace Opening (approx.): 30″ W x 18″ H x 14″ D
  • Viewing Area: Full fire glass bed with dynamic flame effect

DIMENSIONS

  • Fire Glass Length: 24″
  • Burner: Precision-engineered vent-free steel burner

CONSTRUCTION & MATERIALS

  • Burner: Heavy-duty steel with precision ports
  • Media: Tempered fire glass with sand/granules
  • Reinforcement: Steel burner frame ensures durability

CERTIFICATIONS & USE

  • Certification: ANSI certified for vent-free indoor use
  • Safety Features: Oxygen Depletion Sensor (ODS) included
  • Use: Indoor residential only
  • Restrictions: Not approved for bedrooms, bathrooms, or high-altitude areas
  • Installation: Professional installation recommended

ELECTRICAL SPECIFICATIONS

  • Ignition Options: Manual safety pilot or millivolt remote-ready
  • Power Requirement: None for manual/millivolt systems
  • Remote Compatibility: Works with wall switches, thermostats, and handheld remotes (millivolt)

CLEARANCE REQUIREMENTS

  • Side Wall: Minimum 6″
  • Mantel: Minimum 12″ above fireplace opening
  • Follow manufacturer guidelines for safe installation

WARRANTY

  • Burner & Fire Glass: 10-Year Limited Warranty
  • Valves & Controls: 3-Year Warranty

DESIGN

  • Series: Contemporary Vent-Free Fire Glass Collection
  • Style: Sleek, reflective fire glass design for modern interiors
  • Flame Effect: Dynamic flames across a 24″ see-through glass bed
  • Application: Ideal for see-through, peninsula, or open-concept fireplaces

WHAT’S IN THE BOX

  • 24″ See-Through Fire Glass Set (selected color)
  • Vent-Free Burner Assembly
  • Fire Glass Media Starter Set
  • Sand/Granules
  • Control Valve & Ignition Components (per ignition type)
  • User Manual
Installation
  • Indoor Residential Only
  • Vent-Free — No Chimney or Gas Required
Downloads & Resources

Every order ships free to any address in the contiguous United States — no minimums, no fine print.

Your order ships via FedEx or UPS — delivered to your door within 3–7 business days.

Why Electric Fireplaces USA?

The most trusted electric fireplace specialists online — expert advice, authorized brands, and dedicated support before and after every purchase.

Authorized Real Fyre Dealer
Full manufacturer warranty honored on every purchase. Direct relationship with Real Fyre — not a grey-market reseller.
Real Fireplace Experts
Call (877) 429-3322 and speak with a specialist who knows electric fireplaces inside and out. Free advice, no pressure, no scripts.
Price Match Guarantee
Find the same product cheaper at any authorized dealer? We'll match or beat their price. Call us before you buy.
Free Shipping, Always
Free shipping on every order to the contiguous US — no minimums, no hidden charges.
30-Day Returns
Return any uninstalled item in original condition within 30 days for a full refund.
Post-Purchase Support
Here after delivery too — warranty questions, part lookups, installation guidance, and more.
Have a question? We're here to help.
📞 (877) 429-3322

Frequently Asked Questions

  • The 24-inch G21 burner delivers up to 40,000 BTU on Natural Gas and 40,000 BTU on Liquid Propane. The minimum firebox dimensions required are 28 inches (front width) x 16 inches (depth) x 17 inches (height). For indoor installation, the maximum BTU allowed is calculated using the formula: Length x Width x Height x 20 (see the owner's manual).

  • Fire glass is NOT included with the burner and must be purchased separately — the burner will not function without it. For the standard 24-inch G21 model, approximately 10 lbs. of fire glass or Fyre Gems is required; the See-Through version requires 12½ lbs. You can choose from regular fire glass, reflective fire glass, or fire gems in a wide range of colors.

  • Yes, the G21 24-inch set is available in both Natural Gas and Liquid Propane configurations, and it is rated for both indoor and outdoor use. The burner is ANSI certified for both fuel types and includes an Oxygen Depletion System (ODS) pilot that automatically shuts off the burner if indoor oxygen levels drop to an unsafe level. Always check local codes before installing a vent-free appliance indoors.

  • The Real Fyre vent-free burner components (excluding valves, ODS pilots, and controls) are covered by a 10-year limited warranty. The fire glass, gems, and nuggets carry a 5-year warranty, while valves, pilots, and controls are covered by a 1-year limited warranty. Note that the warranty does not cover on-site labor, installation costs, or parts removal expenses.

  • The set includes the G21 Vent-Free Gas Burner, a Polished Reflector Panel, a Connector Kit, a Remote Control Kit, a Metal Heat Shield, a Damper Clamp, and a User's Manual. It is operated by simply connecting to a gas line, lighting the pilot, and using the included handheld remote control for on/off operation. The burner features hidden controls and a piezo ignition for a clean, user-friendly appearance.