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BUF Series Vent Free* Firebox

No room for a hearth or flue? The BUF Series firebox has you covered. Its zero-clearance, vent free design permits placement in a wide range of different settings, and it has two sizes to accommodate large and small log sets. Read More

Model Details

Install Almost Anywhere
Looks great in any setting — With a true 36" or 42" brick-to-brick opening, this series is a versatile, vent free option for any design application. The neutral refractory firebrick and classic masonry match any décor.
CSA Design Certified
A perfect fit — The BUF Series firebox is certified to fit most 18", 24" and 30" vent free gas log sets.
Zero Clearance
Designed to accommodate your needs — Zero clearance design gives you the flexibility to add this firebox to any interior wall.
Up to 906 sq. in. of Viewing Area
Check out the view — With up to 906 sq. in. of viewing area, friends and family can enjoy a lovely flame picture from almost anywhere in the room.

Available Sizes:

Quick Look

Heat Distribution
CSA Design

* The use of vent free appliances is prohibited in Canada and some US states. Please check your state code for vent free products.
Gas Log Sets sold separately. See Monessen Gas Log Sets.

Guides & Literature

Finishing Options

  • Blower Kit Blower Kit FA2A200 CFM forced air blower.
  • Outside Combustion Air Kit Outside Combustion Air Kit AK4Draws in outside combustion air for your firebox rather than pulling it from the room.

BUF Series Model Line-Up

Unique features by model number

Size 36" 42"
Model Number BUF400 BUF500
  • 40 (W)
  • 34 (H)
  • 21 (D)
  • 46 (W)
  • 34 (H)
  • 21 (D)
Hearth Dimensions
  • 35-1/2 (W)
  • 21-1/2 (H)
  • 17 (D)
  • 20-3/8(RW)
  • 41-1/2 (W)
  • 21-1/2 (H)
  • 17 (D)
  • 26-3/8(RW)
Fire Viewing Area 36" x 21-9/16" 42" x 21-9/16"
Spec Sheets
& Manuals

Common features for this family

Viewing Style Front
Venting Vent Free
Termination None
Certifications CSA Design