Description
The Superior VRT3136 36 Inch Traditional Vent Free Firebox with Liner is designed to provide a versatile and attractive foundation for a custom vent-free fireplace installation. Featuring a clean-face, heat-circulating design, this firebox offers a spacious viewing area that beautifully showcases compatible vent-free gas log sets. Its traditional styling and included liner create an appealing backdrop for the flames, making it an excellent addition to living rooms, family rooms, and other gathering spaces.
Compatible with any listed ANSI Z21.11.2 vent-free gas log set, the Superior VRT3136 allows homeowners to personalize their fireplace with the burner system, log style, and controls that best fit their needs. The firebox comes equipped with a heat deflection hood and mesh fire screens, while optional precision-cut decorative twin-pane screen doors in a textured iron finish provide an upgraded appearance. Optional blower kits and an outside air kit are also available for enhanced comfort and installation flexibility.
Built with a durable textured powder coat finish, the VRT3136 is engineered for dependable performance and long-term durability. Its heat-circulating construction helps distribute warmth more effectively throughout the room, while the larger 36-inch opening creates a striking focal point. Backed by a 20-year limited warranty, the Superior VRT3136 delivers the flexibility, reliability, and classic appearance homeowners expect from a premium vent-free firebox.
Included
- Vent-Free Gas Firebox
- Hood
- Mesh Fire Screen
- Literature Kit (Manuals and Guides)
Optional Accessories
- Vent-Free Log Set
- Arched Screen Door
- Blower Kit
- Outside Air Kit
- Touch Up Paint
- Wall Switch Kit
Features
- Available in 32”, 36”, and 42” models
- All models are heat-circulating with a clean face
- Includes heat deflection hood
- Durable textured powder coat finish
- Includes mesh fire screens
- Select from a variety of compatible vent-free log sets and controls (sold separately)
- Optional precision-cut decorative twin-pane screen doors in a textured iron finish
- Optional blower kits available for all models
- Optional outside air kit
- 20-year limited warranty
Compatible with any listed ANSI Z21.11.2 vent-free log set. Choose a Superior vent-free log set for best results.
Specifications
| Brand | Superior |
| Catalog Number |
F3306, F3309 |
| Model Number |
VRT3136WS VRT3136F |
| Product Type | Vent-Free Gas Fireplace |
| Framing Width |
42-1/4" |
| Framing Height | 40-1/4" |
| Framing Depth | 20-1/2" |
| BTU | Based on vent-free logs installed |
| Design Style | Firebox Only |
| View Style | Front-View |
| Agency Listing | Built to ANSI Z21.91 |
Product Specifications

Warranty
![]() ttps://cdn.shopify.com/s/files/1/0686/3156/0499/files/20-Years-Warranty.jpg?v=1681616895 |
Innovative Hearth Products ("IHP") 20-Year Limited Warranty warrants your Superior® Brand gas fireplace, Stove, or Insert ("Product") to be free from defects in materials and workmanship at the time of manufacture. |
Documents & Files
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Product Brochure
-
Vent-Free Gas Logs Brochure
-
Smart Sheet
-
Installation and Operation Manual
- Specifications Sheet
About The Manufacturer






