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Magnum Vent Free* Firebox

For vent free design in a large format, look no further than our Magnum firebox. Two expanded sizes allow you to install almost any log set you wish. Read More

Model Details

Taller Fireplace Opening
Reliable heat for bigger spaces — This firebox offers a radiant design and taller opening designed to help warm larger rooms.
CSA Design Certified
A perfect fit — Magnum fireboxes are 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.
Firebrick Options
Looking good — Magnum fireboxes are available with either 3D Ceramic Fiber or Herringbone Refractory firebrick, so you can select the right style to best fit your room decor.
Up to 1,097 sq. in. of Viewing Area
Check out the view — With up to 1,097 sq. in. of viewing area, friends and family can enjoy a lovely flame picture from almost anywhere in the room.

Available Sizes:

Quick Look

Venting
None
Heat Distribution
Radiant
Certifications
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 BLOTMC160 CFM variable thermostat controlled forced air blower.
  • Curved Trim Kits Curved Trim Kits Black: BLTKM36C, BLTKM42C. Stainless Steel: SSTKM36C, SSTKM42C.Available in 2 sizes and 2 colors, these curved trim kits must be attached before installing the firebox in the wall.
  • Outside Combustion Air Kit Outside Combustion Air Kit AK4Draws in outside combustion air for your firebox rather than pulling it from the room.
  • Arched Fronts Arched Fronts Black Texture: GMD36AFBT, GMD42AFBT. Iron Age: GMD36AFIA, GMD42AFIA.Available in 2 sizes and 2 colors, these decorative fronts feature a lower door for control access. For Magnum "D" models only.
  • Cabinet Door Frames Cabinet Door Frames Black Texture: DMD36CDFBT, DMD42CDFBT. Iron Age: DMD36CDFIA, DMD42CDFIA.Available in 2 sizes and 2 colors, these frames are required for cabinet door installation. For Magnum "D" models only.
  • Cabinet Doors with Screen Cabinet Doors with Screen Black Texture: DMC36CDBT, DMC42CDBT. Iron Age: DMC36CDIA, DMC42CDIA.Available in 2 sizes and 2 colors, these screened door sets provide a decorative accent that adds allure to your firebox. For Magnum "D" models only.
  • Wall Surrounds Wall Surrounds WS500FC-O (Honey Oak), WS500FC-DC (Dark Cherry).For 36" Magnum "D" models only, these surrounds provide a finished look for your firebox's wall installation.
  • Wall Hearths Wall Hearths WH500F-O (Honey Oak), WH500F-DC (Dark Cherry).For the full built-in experience, add a hearth to your firebox's wall installation. For 36" Magnum "D" models only.

Magnum Model Line-Up

Unique features by model number

Size 36" 36" 42" 42"
Model Number MCUF36D-R MCUF36E-F MCUF42D-R MCUF42E-F
Styling Herringbone Firebrick Ceramic Fiber 3D Firebrick Herringbone Firebrick Ceramic Fiber 3D Firebrick
Dimensions
  • 41-1/4 (W)
  • 37-3/8 (H)
  • 18-1/4 (D)
  • 41-1/4 (W)
  • 37-3/8 (H)
  • 18-1/4 (D)
  • 47 (W)
  • 37-3/8 (H)
  • 18-1/4 (D)
  • 47 (W)
  • 37-3/8 (H)
  • 18-1/4 (D)
Hearth Dimensions
  • 32-1/8 (W)
  • 25 (H)
  • 15 (D)
  • 25-3/4(RW)
  • 32-1/8 (W)
  • 25 (H)
  • 15 (D)
  • 25-3/4(RW)
  • 38-1/8 (W)
  • 25 (H)
  • 15 (D)
  • 31-3/4(RW)
  • 38-1/8 (W)
  • 25 (H)
  • 15 (D)
  • 31-3/4(RW)
Fire Viewing Area 36" x 26-1/8" 36" x 26-1/8" 42" x 26-1/8" 42" x 26-1/8"
Spec Sheets
& Manuals

Common features for this family

Viewing Style Front
Venting Vent Free
Termination None
Certifications CSA Design