Description
AUTHORIZED DEALER The Kozy Heat Callaway See-Thru is a 50-inch see-through (double-sided) direct-vent gas fireplace — engineered to install in a wall between two rooms, with ceramic glass on both sides so the fire is visible from either space simultaneously. With a 53-1/2″ × 16-3/4″ linear viewing area, modulating 18,500–35,500 BTU/hr burner, and surprisingly slim 17″ depth despite the dual-sided design, the Callaway See-Thru is an architectural feature first and a heater second — designed for custom homes, major renovations, and design-led installations where a fireplace serves as both visual focal point and physical connection between two living spaces.
What Makes the Callaway See-Thru Different
This is a see-through gas fireplace — fire visible from both sides of a shared wall. Where most fireplaces are single-sided (firebox against a wall, glass facing one room), the Callaway See-Thru has ceramic glass on BOTH sides. The unit sits inside a wall framed between two rooms, so the same fire is visible from either space simultaneously. The visual effect is architectural: instead of being an object IN a room, the fireplace becomes a connection BETWEEN rooms.
See-through fireplaces are a specialty product category, and the Callaway is one of the more refined options in the residential market. Beyond the dual-sided viewing, the Callaway carries the design choices that make Kozy Heat the brand serious designers, builders, and homeowners trust:
- Modulating burner technology — output continuously adjusts between 18,500 and 35,500 BTU/hr based on room demand, rather than the cycling on/off of single-stage burners. More consistent comfort, lower gas consumption.
- Surprisingly slim 17″ depth — most one-sided fireplaces of this width need 19-22 inches of framing depth. The Callaway See-Thru fits in standard 2×6 wall framing (with appropriate clearances), which makes interior wall installations much easier than competitors that require thicker walls.
- Linear horizontal viewing area — 53-1/2″ wide × 16-3/4″ tall produces a wide, modern flame display that reads as architectural detail rather than traditional appliance
- Ceramic glass on both sides — withstands the higher operating temperatures of an exposed-on-both-sides firebox
- Direct vent operation — sealed combustion with exhaust outside; no indoor air loss, no combustion byproducts in either room
- Extensive heat distribution options — Komfort Zone Kit, Interior and Exterior Heat Transfer Kits, Power Vent System, and Vented Cavity (TV-above-fireplace compatibility)
Specifications
| Brand | Kozy Heat |
|---|---|
| Model | Callaway See-Thru (Callaway 50) |
| SKU | CLW-ST |
| Form Factor | See-Through (double-sided linear) |
| Vent Type | Direct Vent |
| BTU Input (Natural Gas) | 18,500 – 35,500 BTU/hr (modulating) |
| BTU Input (Liquid Propane) | 18,000 – 35,000 BTU/hr (modulating) |
| Steady State Efficiency | 73.9% (NG) / 75.3% (LP) |
| Fuel Type | Natural Gas or Liquid Propane (specify at order) |
| Overall Width | 59-1/2 in. |
| Overall Height | 39-1/8 in. |
| Overall Depth | 17 in. (slim for a see-through design) |
| Weight | 335 lbs. |
| Viewing Area (each side) | 53-1/2 in. (W) × 16-3/4 in. (H) |
| Framing Width | 64-1/2 in. |
| Framing Height | 43-1/4 in. |
| Framing Depth | 17 in. |
| Glass | Ceramic (both sides) |
| Burner Type | Modulating (continuous BTU adjustment) |
| TV-Above-Fireplace Compatible | Yes — with optional Vented Cavity accessory |
| Heat Distribution Options | Komfort Zone Kit, Interior/Exterior Heat Transfer Kits, Power Vent System |
| Certification | ANSI Z21.88 Vented Gas Heater |
| Estimated Heating Area | Two rooms, ~1,500–2,000 sq. ft. combined (varies by configuration) |
| Made In | USA (Hussong Manufacturing, Minnesota) |
Available Options & Accessories
The Callaway See-Thru offers extensive customization to match different interior design directions and installation contexts. Beyond the heat distribution options covered above, common customizations include:
- Log Set — choose from Kozy Heat’s log set options (Traditional or Birch). The log set is positioned to look balanced from both sides of the firebox, so the same logs are visible from either room.
- Refractory Liner Options — interior firebox lining that’s visible behind the flame from both sides. Available options typically include:
- Black Brick Refractory — clean, modern, contrast-forward
- Chicago Brick Refractory — traditional warm-toned brick
- Ledgestone Refractory — textured stacked-stone look
- Herringbone Refractory — classic herringbone brick pattern
- Black Glass Panels — sleek modern contemporary finish; especially popular with the Callaway’s contemporary linear design
Important: whichever refractory you choose will be visible from BOTH rooms simultaneously, so the design decision affects both spaces.
- Remote Control Options — wall switch (standard), basic on/off remote, or programmable thermostat remote with timer and flame height control
- Fuel Type — Natural Gas or Liquid Propane (specified at order; conversion kits available if you ever need to switch fuel sources)
- Decorative Fronts / Surrounds — separate from refractory, these are the outer trim and frame around the firebox opening on each side. Browse our Fireplace Fronts collection for available options.
- Vent Kit Components — sized for your specific install (vent length, configuration, termination type, power vent if applicable)
- Battery Backup — optional accessory that allows ignition during power outages (useful in areas with frequent power loss; note that the fan and any electronic controls still require power to operate)
Brand
Kozy Heat®






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