Monessen Attribute: an angled firebox that moves more heat into the room
The Monessen Attribute is a vent free firebox for an indoor wall, sold without a burner. It comes 32, 36, or 42 inches wide. Pick the size on the page. The opening is 27 inches tall. Brick patterned panels or reflective black glass line the inside. The screens slide into pockets at the sides.
A firebox is the steel box your builder frames into the wall and finishes in stone, tile, or brick. You add a Monessen vent free log set or glass burner, and the logs set the heat. The price is for the firebox. Vent free means it needs no chimney or vent pipe at all, and nearly all the heat stays in the room. Check your local code first, since some areas restrict vent free fireplaces. On the page you pick the size and the interior panels. You can add a Monessen log set or Lyric glass burner kit, each with a touchscreen remote. A fan and a wood mantel or mantel shelf are also optional. Want another firebox option? See the Monessen Exacta firebox. The Monessen Attribute ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Features
Attribute Series
With a big presence and Monessen’s angled design that pushes out more heat, the Attribute vent-free firebox delivers a fireside experience with style. Choose trendy gray or classic brown interior panels — both available as a reversible panel for a traditional or herringbone option—or go modern with reflective black glass for a subtle sophisticated twist. Finish your fireplace right up to the firebox with the material of your choice and add the Monessen log set you love for a perfect custom look.
Key Features:
- Deep box and wide opening provide generous room for the log set of your choice
- Clean, louverless design
- Screens tuck away into hidden pockets to reveal expansive views
- Optional mesh operable doors available for 36″ and 42″ models
- Multiple interior panel options fit your decor and highlight your vent-free log set
- Available in 32″, 36″ or 42″ models
- Angled firebox and uniquely engineered air channels move more heat into the room, maximizing efficiency
Specifications
ACUF32-BD | ACUF32-GD | ACUF36-BD | ACUF36-GD | ACUF42-BD | ACUF42-GD
| Model |
Attribute 32 |
Attribute 36 |
Attribute 42 |
| Unit Width |
38″ |
42″ |
48″ |
| Unit Depth |
20″ |
20″ |
20″ |
| Unit Height |
34″ |
34″ |
34″ |
| Unit Width Back |
27-1/4″ |
31-1/4″ |
37-1/4″ |
| Hearth Front Height |
25-1/2″ |
25-1/2″ |
25-1/2″ |
| Hearth Depth |
15″ |
15″ |
15″ |
| Hearth Rear Width |
20-3/8″ |
24-3/8″ |
30-3/8″ |
| Hearth Rear Height |
22-5/8″ |
22-5/8″ |
22-5/8″ |
| Viewing Area |
32 x 27″ (864 sq in) |
36 x 27″ (972 sq in) |
42 x 27″ (1134 sq in) |
FAQ
What is a vent-free firebox, and what turns the Attribute into a fireplace?
A firebox is the enclosure that a finished fireplace is built around; it carries no burner and no BTU rating of its own. With the Attribute, you frame the box in, choose interior panels, and add the Monessen vent-free log set you love. Because the design is vent-free, it installs like other indoor fireplaces that skip chimney construction altogether.
How much room does the deep box give a log set?
Generous room, by design. Every size shares a 20-inch unit depth, and the deep box pairs with a wide opening so the log set of your choice sits comfortably instead of feeling squeezed. Fuller log arrangements that would fight a shallow enclosure have room to breathe here, which lets the flames and the interior panels show properly.
How much viewing area do the three Attribute sizes give?
The Attribute 32 shows a 32 by 27 inch fire, 864 square inches of it. The 36 steps up to 36 by 27 inches, 972 square inches, and the 42 tops out at 42 by 27 inches, 1,134 square inches. All three share the same 34-inch unit height, so a wider model buys more fire view without a taller footprint.
How does the angled design push more heat into the room?
The box is angled rather than square, and uniquely engineered air channels carry warmth out toward the room instead of letting it linger inside the enclosure. That geometry is built into the firebox itself, so once your log set is burning, more of its heat reaches the people in front of it and efficiency is maximized without extra equipment.
How do the reversible interior panels work?
Each panel is finished on both faces: pick trendy gray or classic brown, then decide which side shows, a traditional brick pattern on one face and herringbone on the other. Flipping the panels changes the whole character of the fire without buying anything new. If neither suits your room, reflective black glass panels deliver a modern, subtly sophisticated alternative.
Are operable doors available on any of the sizes?
Optional mesh operable doors are offered for the 36 and 42 inch models; the 32 does not take them. Every size, though, comes with screens that tuck away into hidden pockets, so you can draw them across the opening or slide them fully out of sight. Between doors, screens, and panels, the firebox dresses up or down to suit the room.
Can tile run right up to the Attribute's opening?
Yes. The face is clean and louverless, with no vents or grilles interrupting the front, so tile, stone, or the material of your choice can finish right up to the firebox. That is exactly how Monessen intends it to be treated: the surround runs clean to the fire, and the log set inside carries the show.