Osburn 2400 Wood Insert - OB02401


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The 2400 insert has the same firebox as its freestanding counterpart, and will transform any conventional decorative fireplace into a highly efficient heating system.

Its 100,000 BTU/hr, combined with a 3.4 cubic foot firebox, will help you to rest easy during those long winter nights, and its large glass window offers a perfect view of the fire.


Height X Width X Depth - Overall 23'' X 31 1/8'' X 28''
Maximum log length 21''
Fireplace opening - minimum (Height X Width X Depth) 23 1/2" X 31 5/8" X 16 1/4"
Weight 512 lb (232 kg)
Firebox volume (cu. ft.) 3.4
Recommended heating area (sq.ft.) 1,000 - 2,700
Recommended chimney diameter 6"
Maximum burn time 10 h
Blower Included Yes
Fuel type Dry cordwood
Maximum heat output 100,000 BTU/h (29.3 kW)


Centre line of flue outlet to the back 7 3/4''
Centre line of flue outlet to the side 14 7/8''
Adjustable threaded legs Yes
Stainless-steel secondary-air system improving gas combustion Yes
Automatic or manual adjustment of combustion air supply Yes
Maximum log length 21''
Log positioning Over width
Chimney diameter 6"
Minimum chimney height (feet) 12'
Baffle type C-Cast
Approved for a mobile home installation No
Shipping Weight 512 lb (232 kg)
Door type Single, glass with cast iron frame
Glass type Ceramic glass
Glass surface – dimensions (Width X Height) 19 1/8'' X 8 7/8''
Glass air-wash system Yes
Premium quality blower included (CFM) 144
Overall dimension (Height) 23''
Overall dimension (Width) 31 1/8''
Overall dimension (Depth) 28''
Door opening – dimension (Height) 8''
Door opening - dimension (Width) 19 1/2''
Firebox – dimension (Height) 13 1/2''
Firebox – dimension (Width) 22 1/2''
Firebox – dimension (Depth) 19 3/8''
Firebox lined with refractory bricks for better heat distribution Yes
Steel thickness – body 3/16"
Steel thickness – top 5/16"
Centre line of flue outlet to the side 14 7/8''
Centre line of flue outlet to the back 7 3/4''
Fireplace opening – minimum (Height) 23 1/2"
Fireplace opening – minimum (Width) 31 5/8"
Fireplace opening – minimum (Depth) 16 1/4"
USA standard (emissions) EPA Method 28
Canadian Standard (emissions) CSA B415.1-10
USA standard (safety) UL 1482
Canadian standard (safety) ULC S628
Tested and listed as per applicable standards By an accredited laboratory (CAN/USA)
Warranty Limited lifetime