900 Wood Stove

Model: #OS-900-WS

Brand: Osburn

Osburn is proud to present its 900 model, the smallest wood stove in the Osburn range. The 900 still incorporates the features and the technology of the larger Osburn stoves. This EPA stove packs a lot of heat with an output of up to 40,000BTU/hr. This sturdy little heater will keep you warm and toasty.

In spite of its size, the Osburn 900 takes an adequate log length of 17", making it an admired option in the small stove market.

Appliance Performance

Fuel Type Dry cordwood
Recommended heating area (sq.ft.): 250 - 1,000
Firebox nominal volume (cu. ft.): 1.3
Maximum burn time: 5 h
Maximum heat output (dry cordwood): 40,000 BTU/h (11.7 kW)
Overall heat output rate (min. to max.): 10,800 BTU/h (3.2 kW) to 22,600 BTU/h (6.6 kW)
Average overall efficiency (EPA cribs / Douglas fir): 68.0 % (HHV)
73.5 % (LHV)
Average overall efficiency (dry cordwood): N.A. (HHV)
N.A. (LHV)
Optimum efficiency : 78.2 %
Average particulate emissions rate: 4.0 g/h
Average CO: 130.5 g/h

General Features

High-efficiency EPA certified appliance Yes
Automatic or manual adjustment of combustion air supply N.A.
Maximum log length 17"
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 Stainless steel
Approved for an alcove installation Yes
Approved for a mobile home installation No
Shipping Weight 273 lb (124 kg)
Door type Single, glass with cast iron frame
Glass type Ceramic glass
Glass surface – dimensions (Width X Height) 13 3/8" X 7 3/4"
Glass air-wash system Yes
Overall dimension (Height) 25 3/4"
Overall dimension (Width) 22 7/8"
Overall dimension (Depth) 21 7/8"
Door opening – dimension (Height) 7 5/8"
Door opening - dimension (Width) 15"
Firebox – dimension (Height) 9 5/8"
Firebox – dimension (Width) 18 3/8"
Firebox – dimension (Depth) 12 1/2"
Firebox lined with refractory bricks for better heat distribution Yes
Stainless-steel secondary-air system improving gas combustion Yes
Model Legs
Adjustable threaded legs Yes
Steel thickness – body 3/16"
Steel thickness – top 1/4"
USA standard (emissions) EPA Method 28
Canadian Standard (emissions) CSA B415.1-10
USA standard (safety) UL 1482, UL 737
Canadian standard (safety) ULC S627
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)

Single wall pipe
Double wall pipe
Single wall pipe
(United States)
Double wall pipe
(United States)
Clearance – back wall 15 1/4" 10" 15" 10"
Clearance – placed in a corner 10" 10" 10" 10"
Clearance – side wall 18" 18" 18" 18"
Clearance – top
(measured from the platform on
which the appliance is installed)
84" 84" 84" 84"

Call Us

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