See-through fireplaces connecting inside and outside
Indoor-Outdoor Fireplaces
Fortress, Twilight, and Twilight Modern are purpose-built to connect an interior room with an exterior living space. Each gives both sides a finished view while addressing weather exposure, venting, and the different design needs inside and outside.
Buying guidance
Why choose Indoor-Outdoor Fireplaces?
Fortress, Twilight, and Twilight Modern are purpose-built to connect an interior room with an exterior living space. Use the short sections below to see where it fits, what separates it, and what should be settled before ordering.
Best forConnecting rooms or defining an open space
Fortress, Twilight, and Twilight Modern are purpose-built to connect an interior room with an exterior living space.
What makes it different3 configurations within one family
The current collection includes Fortress 36: Premium traditional indoor-outdoor; Twilight: Traditional indoor-outdoor; Twilight Modern: Contemporary indoor-outdoor. A sealed stainless-steel fireplace with a substantial traditional view.
What to plan forFrame every viewing side before finish work
Confirm the exact model, natural gas or propane, vent path, clearances, heat-management approach, and surrounding finish before construction. The current choices shown here include Premium traditional indoor-outdoor, Traditional indoor-outdoor.
Compare nearby Heat & Glo families 3 alternatives
Mezzo See-Through
Mezzo See-Through carries the clean ribbon-flame design through a double-sided firebox.
Primo II See-Through
Primo II See-Through brings the premium Primo II presentation to two connected spaces.
Architectural Fireplaces
Heat & Glo's architectural fireplace collection brings the fire into more than one view.
Official product video
See the flame before you compare it in person
What to compare
- Flame height and movement
- Log, ember, glass, or stone presentation
- Viewing area and room scale
- Heat output and control options
- TV, mantel, and finish requirements
Current collection
Models and sizes
Fortress 36
Premium traditional indoor-outdoor
A sealed stainless-steel fireplace with a substantial traditional view.
Twilight
Traditional indoor-outdoor
A versatile see-through fireplace with a log presentation.
Twilight Modern
Contemporary indoor-outdoor
A modern crushed-glass presentation for cleaner exterior and interior designs.
Official inspiration
Indoor-outdoor design examples
These official images show the current families from both sides of the wall. Indoor-outdoor fireplaces should be selected early so framing, exterior drainage, weather exposure, venting, windows, and finish materials can be coordinated together.
Before ordering
Plan the complete fireplace
Confirm the model and vent route
Bring plans, room photos, or opening dimensions. We will verify the correct model, fuel, venting, and clearances.
Choose the finished appearance
Compare fronts, logs, interiors, media, mantels, hearths, and surrounding brick or stone in one plan.
Coordinate heat and the television
Heat-management choices, mantel clearances, framing, and television placement should be decided before construction.
Details and support
Resources
Official Indoor-Outdoor Fireplaces information
Use the manufacturer page for current manuals, detailed specifications, and configuration resources.
Get help from Gagnon
We can narrow the choices, confirm the installation plan, and provide current product and installation pricing.
Let’s plan the right fireplace
Send us your dimensions or visit the showroom. We will help compare models, finishes, venting, and installation requirements.