See-Through Fireplaces

A see through fireplace is open on two opposite faces, so one firebox serves two rooms and the same fire is visible from both. This collection covers every fuel that comes in the shape: gas in sealed direct vent and open-front vent-free, plus electric, water vapor and ethanol models that need no flue at all.

Authorized Dealer • Full Warranties • Free US Shipping

See through fireplaces are open on two opposite faces and built into a wall, so one firebox serves the rooms on either side and the same fire is visible from both. Double sided and pass-through are the same thing. It is the only fireplace format that makes a shared wall into a feature for two rooms at once.

See-through is not three-sided

Worth settling first, because the installations have nothing in common. A see-through unit is open on two opposite faces and lives inside a wall. A three-sided or bay unit is open on the front and both ends and sits at the end of a wall or on a peninsula, serving one room from three angles.

If the goal is two rooms, only see-through does it.

Every fuel comes in this shape

The format is not gas-only, and the fuel decides how buildable the project is.

- Gas is the largest group here. Direct vent models are sealed and carry glass on both faces; vent-free models are open-fronted with a mesh safety barrier, because they draw combustion air from the room and cannot be sealed. Gas gives the most heat and a real flame. See the gas-specific page at double sided gas fireplaces.

- Electric needs no venting, no gas line, and far shallower framing, which makes it the practical choice in an existing partition wall.

- Water vapor lights an ultrasonic mist, producing a cool flame with real three-dimensional volume that holds up from both faces. Compare in water vapor fireplaces.

- Ethanol needs no utility connection at all, only fuel and clearance.

Wall depth decides the project

A see-through firebox has to be finished on both faces with the burner between them, so it is deep. Nearly every gas model needs a rough opening deeper than a standard 2x4 partition provides, which means furring out the wall or building it as a dedicated feature. Electric models are the exception, and several fit framing that gas units cannot.

Get the rough opening dimensions from the manual before you commit to a width. That figure, not the size of the glass, is what determines whether this is framing work or a structural change.

Heat divides, and so does the view

Two consequences people discover after installation. The heat splits between both rooms, so size the unit for the combined space rather than for whichever room you care about more. And you give up the wall: a see-through fireplace cannot have a television, art, or shelving above it on either side in most designs, because both faces are the fireplace.

Neither is a reason not to do it. Both are worth knowing before the wall is open.

For an indoor-outdoor installation, look for models explicitly rated for exterior exposure on one face. Browse related formats in 3-sided electric fireplaces, or the full category in modern fireplaces.

Frequently Asked Questions about See-Through Fireplaces

What is a see through fireplace?

A firebox open on two opposite faces and built into a wall, so the same fire is visible from the rooms on either side. Double sided and pass-through mean the same thing. It differs from a three-sided or bay fireplace, which is open on the front and both ends and sits at the end of a wall rather than inside one.

Are see through fireplaces a good idea?

They are, in one specific situation: when two rooms genuinely share a wall and both deserve the fire. That is a real architectural win no single-sided unit can match. The honest caveats are that the firebox is deeper than a standard partition so the wall usually has to be built or furred out for it, that heat divides between the two rooms, and that you lose the wall as a place to hang anything.

What fuel types come in a see through design?

All of the main ones, and this collection has each. Gas is the largest group in both ventless and direct vent. Electric needs no venting or gas line at all and installs in a far shallower wall. Water vapor produces a cool three-dimensional flame from lit mist, which reads convincingly from both sides. Ethanol needs no utility connection of any kind.

Can a see through fireplace be installed between indoors and outdoors?

Yes, and it is one of the most striking uses of the format, with one face in a living room and the other on a covered patio. It requires a model specifically rated for outdoor exposure on that face, correct flashing and weatherproofing where the unit passes through the wall, and consideration of what the opening does to your building envelope. Check each product's listed ratings rather than assuming.

How deep does the wall need to be?

Deeper than a standard 2x4 partition for nearly every gas model, because a see-through firebox has to be finished on both faces with the burner between them. Electric see-through units are the exception and several fit far shallower framing. The rough opening dimensions are published in each product's manual, and they decide the project, not the size of the glass.

Do you need a chimney for a see through fireplace?

Not for most of this collection. Ventless gas, electric, water vapor and ethanol models all run without a flue, though ventless gas carries state and local restrictions worth checking first. Direct vent gas models do need venting, but through a coaxial pipe to an exterior wall or roof rather than a traditional chimney.