See-Through & Double-Sided Gas Fireplaces
Modern See-Through Gas FireplaceThe Flare Modern See-Through gas fireplace — also known as a double-sided or two-way fireplace — creates a seamless connection between two spaces, acting as a window that links one room to another. Whether as a striking centerpiece or a subtle room divider, it ties together open spaces while offering a clear view of the flame from both sides. Available in lengths from 30 to 100 inches and three glass heights, there’s a Flare see-through gas fireplace to suit any residential or commercial setting.
Double-Sided and Two-Sided Gas Fireplaces
A double-sided fireplace and a see-through fireplace are the same thing: one firebox set into the wall between two rooms, showing a single flame from both faces. It is also called a two-sided or two-way fireplace, and the shorter spelling see-thru fireplace is just as widely used. Flare builds every one as a frameless linear gas fireplace, so each side reads as a clean rectangle of fire with no visible frame.
Placed between two rooms, a double-sided gas fireplace works as a room divider that still lets light and sightlines through — a living room and dining room, a bedroom and ensuite, or an indoor room and a covered patio. Because one direct-vent firebox serves both faces, two rooms are warmed from a single appliance and a single gas line.
See-Through Fireplace Models & Dimensions
| Model Name | Full Width | Viewing Window Width | Viewing Window Height | Full Height Minus Legs | Vent Adapter Size |
|---|---|---|---|---|---|
| Flare-ST-30-R | 32 12/16" | 28 4/16" | 16" | 28" | 4"x6" |
| Flare-ST-45 | 45 13/16" | 41 4/16" | 16" | 28" | 4"x6" |
| Flare-ST-50 | 52 8/16" | 47 15/16" | 16" | 28" | 5"x8" |
| Flare-ST-60 | 62 5/16" | 57 13/16" | 16" | 28" | 5"x8" |
| Flare-ST-70 | 72 3/16" | 67 10/16" | 16" | 28" | 5"x8" |
| Flare-ST-80 | 84 12/16" | 80 4/16" | 16" | 28" | 5"x8" |
| Flare-ST-100 | 101 11/16" | 97 3/16" | 16" | 28" | 5"x8" |
| Flare-ST-30-H | 32 13/16" | 28 4/16" | 24" | 35 7/8" | 4"x6" |
| Flare-ST-45-H | 45 13/16" | 41 4/16" | 24" | 35 14/16" | 4"x6" |
| Flare-ST-50-H | 52 8/16" | 47 15/16" | 24" | 35 14/16" | 5"x8" |
| Flare-ST-60-H | 62 5/16" | 57 13/16" | 24" | 35 14/16" | 5"x8" |
| Flare-ST-70-H | 72 3/16" | 67 10/16" | 24" | 35 14/16" | 5"x8" |
| Flare-ST-80-H | 84 12/16" | 80 4/16" | 24" | 35 14/16" | 5"x8" |
| Flare-ST-100-H | 101 11/16" | 97 3/16" | 24" | 35 14/16" | 5"x8" |
| Flare-ST-25-EH | 24 3/4" | 20 3/8" | 30" | 42" 1/8" | 4"x6" |
| Flare-ST-45-EH | 45 13/16" | 41 4/16" | 30" | 42" 1/8" | 4"x6" |
| Flare-ST-50-EH | 52 8/16" | 47 15/16" | 30" | 42" 1/8" | 5"x8" |
| Flare-ST-60-EH | 62 5/16" | 57 13/16" | 30" | 42" 1/8" | 5"x8" |
| Flare-ST-70-EH | 72 3/16" | 67 10/16" | 30" | 42" 1/8" | 5"x8" |
| Flare-ST-80-EH | 84 12/16" | 80 4/16" | 30" | 42" 1/8" | 5"x8" |
| Flare-ST-100-EH | 101 11/16" | 97 3/16" | 30" | 42" 1/8" | 5"x8" |
Product Sheets
16″ Regular
24″ High
30″ Extra High
3-Part Spec Sheets
16″ Regular
24″ High
30″ Extra High
Dimension Files
16″ Regular
24″ High
30″ Extra High
Framing Guides
Wood Framing
Metal Framing
CAD Files
16″ Regular
24″ High
30″ Extra High
SketchUp Files
16″ Regular
24″ High
30″ Extra High
Revit Files
16″ Regular
24″ High
30″ Extra High
Flare Manuals, Parts, & More
Glass Height Matters More on a Double-Sided Fireplace
Because the opening sits between two rooms it works as a window as much as a firebox — you are looking through it into the next space. Many linear gas fireplaces are limited to a narrow letterbox opening. Flare offers see-through models with 24″ high and 30″ extra-high glass alongside the standard 16″, so the opening reads as a genuine window and the view through is not squeezed into a slot.
Why Choose a See-Through Gas Fireplace
- One flame, visible from two rooms at once
- Divides an open plan without closing it off
- Heats both sides from a single direct-vent firebox
- Frameless on both faces, with no trim to interrupt the opening
- Tall 24″ and 30″ glass openings as well as the standard 16″ — a clearer window between the two rooms
- 21 models, 30 to 100 inches wide
Flare Fireplaces are certified and approved by CSA to be installed in North America, including in the state of California and Massachusetts.
Media Options
Features
Linear Design
The linear direct vent fireplace is designed to appear longer across your space, creating the appearance of your fireplace hanging effortlessly in your wall. The term “linear fireplace” is used to describe the long rectangular glass opening and can be specified by length and glass height.
Advanced 3D Burner
Unlike a traditional pipe burner, Flare’s 3D stainless steel burners create a deeper, taller flame that extends closer to the sides of the fireplace, allowing for a more dynamic, natural look that runs almost end-to-end in your fireplace. Standard on all our indoor fireplaces
Summit Burner
Designed to enhance the visual appeal of fireplaces with taller viewing windows, the optional Summit Burner elevates the flame into the vertical space using an advanced driftwood log burner.
Ceramic Black Reflective Back
All Flare Fireplaces have the option to upgrade to a black ceramic Reflective Back panel. This panel adds depth by increasing the reflection of your flame and media on the back or sides of your fireplace.
Multicolor LED Lighting
The optional multicolor LED kit lights up your firebox with any color in the spectrum using the included remote. Set the color and the memory will remember your choice each time you power the unit on or off. You can also power the lights independently to use the lights regardless of if the fireplace is on.
Optional Double Glass
Flare Fireplaces offers a quick touch Double Glass, which functions without the need of a power vent, across our entire lineup. This safety barrier is perfect when you are looking to achieve that crystal clear viewing window to your flame.
Wall Switch
All residential Flare Fireplaces ship standard with a simple Wall Switch as part of the purchase.
Summer Kit Heat Control
The optional Summer Kit is used to control the heat output of your cool glass or safety screen equipped Flare Fireplace. Have it dump your heat whenever the fireplace is turned on or set it to come on with a switch when you want to show off your Flare, but not the heat.
Wall Timer
Optional analog wall timers are available with every fireplace design.
Home Automation
The modern electronic gas valves equipped on all Flare Fireplaces enable your fireplace to be integrated into a new or pre-existing home automation system. Using signal relays brought to the fireplace, you can control your Flare using your Home Automation hub to control turning your fireplace on and off.
Battery Backup
Operate your screened Flare Fireplace, with no blowers, when the power goes out. Four AA batteries can keep your fireplace functioning for up to two years.
Remote Control
Every residential Flare Fireplace ships standard with a user friendly remote. This remote allows you to control the flame height, thermostat, and timer functionality built into your Flare Fireplace valve system.
Optional Power Vent
In the rare case you need to Power Vent your Flare fireplace we have three options to fit any application. Use our optional Power Vent in application that have an extremely long vent run, or when you need to drag your run under the fireplace.
Multiple Glass Heights
Across the full Flare range, including large-format and custom builds, linear fireplaces span 30″ to 400″. Three glass heights are offered: 16″, 24″ and 30″ in the Front Facing, See Through and Room Definer lineups, with 16″ and 24″ available across the entire range.
Power Supply
Flare Fireplaces all ship with a power supply as part of your purchase.
Modern See Through Fireplace Quote Request
See-Through Fireplace FAQs
What is a see-through (see-thru) fireplace called?
Do see-through gas fireplaces heat both rooms?
What glass heights does the see-through fireplace come in?
What framing does a double-sided fireplace need?
Can the glass on a see-through fireplace be safe to touch?
How many see-through gas fireplace models does Flare offer?
Is a double-sided fireplace a good idea?