A three sided fireplace turns a fire into a true centerpiece. Instead of a single window on one wall, you see the flame from the front and the sides, and it lights up the room from almost every angle. It can anchor an open floor plan, divide two spaces without closing them off, or wrap a corner of a great room in warm light.
Our design team helps homeowners plan multi-sided fireplaces every week. This guide covers the main three sided configurations, where each one works best, and what to think about before you commit.
What Is a Three Sided Fireplace?
A three sided fireplace has glass on three faces instead of one. That gives you a wider view of the flame and lets the fire become part of the architecture, not just something on the wall. Most modern units of this type are sealed direct-vent gas fireplaces, which pull combustion air from outside and send exhaust back out. Ourdirect-vent gas fireplace guide explains how that works.
Three Sided Fireplace Configurations
Multi-sided units come in two main three-face styles, plus the four sided island for a true room centerpiece.
|
Configuration |
Glass Faces |
How It Sits |
Best For |
|
Bay |
Front plus both short ends |
Back against a wall, projecting into the room |
Living rooms that want a wide, panoramic flame |
|
Pier (peninsula) |
Both long sides plus one end |
One end against a wall, extending into the room |
Dividing two spaces in an open floor plan |
|
Island (four sided) |
All four sides |
Freestanding in the room |
Large great rooms and statement spaces |
Bay Three Sided Fireplaces
A bay fireplace looks like a bay window filled with fire. The back sits against a wall, and you see the flame from the front and both ends. It’s a great fit for a living room where seating wraps around the hearth.
Pier or Peninsula Fireplaces
A pier fireplace, often called a peninsula fireplace, extends out from a wall like a kitchen peninsula. You see the flame from both long sides and the open end. It’s one of the best ways to separate a living room from a dining area while keeping the space open and connected.
Four Sided Island Fireplaces
If you want the fire visible from every direction, a four sided island fireplace stands alone in the room. It’s the boldest option and works best in large spaces.
Multi-Sided Gas Fireplaces We Carry
Ourgas fireplaces collection includes several multi-sided models:
- Stellar Enlight Bay Three Sided Gas Fireplace. Panoramic front-and-sides viewing with a clean, modern look.
- Stellar Enlight Pier Three Sided Gas Fireplace. A peninsula-style unit designed to divide spaces.
- Hearth & Home Technologies Three Sided Pier Gas Fireplace. Another pier option for open floor plans.
- Stellar Enlight Island Four Sided Gas Fireplace. A freestanding statement piece visible from every angle.
Ask our team about available sizes for each model so the fireplace matches your room’s scale.
Where a Multi-Sided Fireplace Works Best
In our experience, these layouts get the most out of a multi-sided design:
- Open concept living and dining. A pier fireplace defines each zone without walls.
- Great rooms with tall ceilings. A long bay unit fills the space visually.
- Basements and lower levels. A multi-sided fire adds warmth and a focal point to large, open rooms.
- Room dividers. A peninsula fireplace between a family room and kitchen lets both spaces share the flame.
If your room is smaller or the fireplace needs to tuck into a corner, ourcorner gas fireplace ideas orsmall gas fireplace options may fit better. For a fire that’s open to two rooms, see ourdouble-sided gas fireplace guide.
Design Tips for a Multi-Sided Fireplace
Plan Furniture Around Every View
This style rewards a layout that faces it from more than one direction. Sketch seating so people can enjoy the flame from the front and the sides.
Choose Your Media Carefully
Because you see the firebox from several angles, the media matters. Traditional log sets need to look good from every side. Contemporary glass media or stones often read cleaner in multi-sided units.
Keep Finishes Simple
With glass on three faces, the surround is smaller and more visible. Clean stone or tile around the top and base keeps the focus on the fire. Ourstone fireplace surround guide has material ideas.
Think About the TV
A multi-sided fireplace is usually the star of the room, so the TV often goes on a separate wall. If you want both on one wall, see our guide onTV placement above a gas fireplace.
Choosing the Right Size
Size shapes how a multi-sided fireplace looks and feels in a room. Too small, and it gets lost in a large open space. Too large, and it can overwhelm the furniture around it.
A few guidelines our design team uses:
- Match the length to the wall or divider. A pier fireplace that separates two rooms usually looks best when it spans a good portion of the opening between them.
- Consider ceiling height. Tall great rooms can handle a longer, taller firebox and a surround that rises toward the ceiling.
- Think about viewing distance. The farther away your main seating sits, the larger the flame needs to be to hold its presence.
- Balance heat with room size. A large unit in a small room can make the space too warm. Ourgas fireplace sizing guide explains how to match output to square footage.
During a consultation, we look at your floor plan, ceiling height, and furniture layout together. That’s the easiest way to land on a size that feels intentional from every side.
Heat and Comfort
A multi-sided fireplace spreads its glow across more of the room, and it radiates heat from every glass face. It’s a great supplemental heat source for the spaces around it. If heating is your top priority, our guide towhether gas fireplaces heat a room covers zone heating and output.
Safety With More Glass
More glass means more hot surfaces. Fireplace glass gets very hot during use and stays hot after the flame goes out. TheU.S. Consumer Product Safety Commission urges families with young children to use protective barriers on glass-front gas fireplaces.
For a multi-sided unit, we recommend:
- Safety screens on every glass face where kids or pets can reach
- Walkways planned away from the glass
- Working carbon monoxide alarms on every level, perCPSC guidance
- An annual tune-up to keep combustion clean. Seewhat a professional tune-up includes
Ourfireplace safety guide covers more tips for homes with kids and pets.
Is a Three Sided Fireplace Right for You?
A three sided fireplace is a great fit if you:
- Have an open floor plan or a large room
- Want the fire to be a true architectural feature
- Like the idea of viewing the flame from several spots
- Are adding a fireplace as part of a new build or a remodel
Because these units shape the whole room, planning matters. Our guide toadding a new fireplace to your home walks through the process.
Ready to design your three sided fireplace?Schedule a consultation with Fireside and our design team will help you choose the configuration, size, and finishes that fit your space.
Frequently Asked Questions
What is a three sided fireplace called?
Three sided fireplaces are usually called bay fireplaces (front and both ends) or pier fireplaces (both long sides and one end). A pier fireplace is often called a peninsula fireplace.
What is the difference between a bay and pier fireplace?
A bay fireplace sits with its back against a wall and shows the flame on the front and both ends. A pier fireplace extends from a wall like a peninsula and shows the flame on both long sides and the open end.
Do three sided fireplaces give off heat?
Yes. These gas fireplaces radiate heat through each glass face and work well as supplemental heat for the surrounding space.
Are three sided gas fireplaces safe?
Yes, when properly installed and maintained. Because there’s more hot glass, we recommend safety screens on every reachable face in homes with young children or pets.
Can a three sided fireplace divide a room?
Yes. A pier or peninsula fireplace is one of the best ways to separate living and dining areas while keeping an open feel.