3500 Fireplace Insert

Model: #OB03510

Brand: Osburn

The Osburn 3500 wood insert combines power, efficiency and safety. With its amazing features and sober lines that give way to one of the largest glass surfaces in its category, this insert will blend perfectly with the architecture of your home. Its flawless design reveals all the Canadian know-how in terms of alternative heating and will quickly become the house favorite. No harsh winter can resist it!

Appliance Performance

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Firebox – dimension (Depth) 20 1/8"
Firebox – dimension (Width) 22 7/8"
Firebox – dimension (Height) 12 7/8"
Maximum log length 22"
Door opening dimension (Width) 19"
Door opening – dimension (Height) 9 7/8"
Door type Single, glass with cast iron frame
Glass surface – dimensions (Width x Height) 18 7/8" x 11 3/4"
Stove top thickness - 5/16"
Weight 540lbs
Firebox volume (cu. ft.) 3.5
Ultra-quiet blower - 144 CFM, manual, automatic and off rocker switches
Glass type Ceramic glass
Overall dimension (Depth) 29"
Overall dimension (Height) 25 3/4"
Overall dimension (Width) 30 3/8"
Canadian standard (emissions) CSA B415.1-10
USA standard (emissions) EPA/ASTM WK47329
Canadian standard (safety) ULC S628
USA standard (safety) UL 1482, UL 737
Overall heat output rate (max.) 49,500 BTU/h (14.5 kW)
Overall heat output rate (min. to max.) 18,200 BTU/h (5.3 kW)
Average CO 92 g/h
Maximum heat output (dry cordwood) 110,000 BTU/h (32.2 kW)
Fuel type Dry cordwood
Minimum chimney height (feet) 15
Log positioning Over width, left to right, east west loader
Recommended heating area (sq.ft.) 1100 - 2,700
Optimum efficiency 77%
Average particulate emissions rate 1.32g/h
Recommended chimney diameter 6"
Baffle type High heat-resistant C-cast
Maximum burn time 10 h
Flue outlet diameter 6"
Warranty Limited lifetime
Tested and listed as per applicable standards By an accredited laboratory (CAN/USA)

Minimum clearances to combustibles

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

Combustible side mantle to unit 9"
Combustible side wall to unit 19"
Combustible top mantle to unit 27" Top (measured from the platform) 84"
Top shelf to unit 27"
Minimum floor protection in front of unit Canada: 18", USA: 16"

Call Us

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