2400 Wood Insert

Model: #OS-2400-WI

Brand: Osburn

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.

Appliance Performance

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Fuel Type Dry cordwood
Recommended heating area (sq.ft.): 1,000 - 2,700
Firebox nominal volume (cu. ft.): 3.4
Maximum burn time: 10 h
Maximum heat output (dry cordwood): 100,000 BTU/h (29.3 kW)
Overall heat output rate (min. to max.): 13,300 BTU/h (3.9 kW) to 44,100 BTU/h (12.9 kW)
Average overall efficiency (EPA cribs / Douglas fir): 70.8 % (HHV)
75.0 % (LHV)
Average overall efficiency (dry cordwood): N.A. (HHV)
N.A. (LHV)
Optimum efficiency : 78 %
Average particulate emissions rate: 3.9 g/h
Average CO: 183.3 g/h

General Features

High-efficiency EPA certified appliance Yes
Maximum log length 21"
Log positioning Over width
Chimney diameter 6"
Flue outlet diameter 6"
Type of chimney CAN/ULC S629, UL 103 HT (2100 °F)
Minimum chimney height (feet) 12'
Baffle type C-Cast
Approved for an alcove installation N.A.
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
Stainless-steel secondary-air system improving gas combustion Yes
Adjustable threaded legs Yes
Steel thickness – body 3/16"
Steel thickness – top 5/16"
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

Minimum clearances to combustibles

(Data expressed in inches. 1 inch = 25.4 mm)

Canada United States
Clearance – top
(measured from the platform on
which the appliance is installed)
N.A. N.A.
Clearance – combustible side mantle to unit 8" 8"
Clearance – combustible top mantle to unit 20 1/2" 20 1/2"
Clearance – combustible side wall to unit 14" 14"
Clearance – minimum floor protection in front of the appliance 18" 16"
Clearance – top shelf to unit 25 1/2" 25 1/2"

Call Us

If you have any questions, or you're ready to place your order, give us a call at (440) 293-4622