Osburn 3500 Wood Insert with 5.5" x 25' Forever Flex Liner Kit
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!
Because each house is unique, choose the door overlay, the faceplate, and the trims that suit you!
Required to complete the woodstove:
- Faceplate Trim
- Door Overlay
Included items: one Osburn 3500 wood insert (OB03510), one connector with Forever Flex 5.5"Ø x 25' flexible liner, one 13" x 13" top plate and one chimney cap with screen, entirely made of stainless steel.
|Fuel type :||Dry cordwood|
|Recommended heating area-ft² : (*)||1,000 - 2,700|
|Overall firebox volume :||3.5|
|EPA loading volume-ft³ :||2.84|
|Maximum burn time : (*)||10 h|
|Maximum heat output (dry cordwood) : (2)||110,000 BTU/h (32.2 kW)|
|Overall heat output rate < : (2) (3)||18,100 BTU/h (5.3 kW) to 49,500 BTU/h (14.5 kW)|
|Average overall efficiency (EPA cribs/Douglas fir) : (3)||N.A. (HHV) (4)||N.A. (LHV) (5)|
|Average overall efficiency (dry cordwood) : (3)||71 % (HHV) (4)||76 % (LHV) (5)|
|Optimum efficiency : (6) (7)||77 %|
|Average particulate emissions rate : (8)||1.32 g/h|
|Average CO : (9)||92 g/h|
(1) Values are as measured per test method, except for the recommended heating area, firebox volume, maximum burn time and maximum heat output.
(*) Recommended heating area and maximum burn time may vary subject to location in home, chimney draft, heat loss factors, climate, fuel type and other variables. The recommended heated area for a given appliance is defined by the manufacturer as its capacity to maintain a minimum acceptable temperature in the designated area in case of a power failure.
(2) The maximum heat output (dry cordwood) is based on a loading density varying between 15 lb./ft³ and 20 lb./ft³. Other performances are based on a fuel load prescribed by the standard. The specified loading density varies between 7 lb./ft³ and 12 lb./ft³. The moisture content is between 19% and 25%.
(3) As measured per CSA B415.1-10 stack loss method.
(4) Higher Heating Value of the fuel.
(5) Lower Heating Value of the fuel.
(6) Performances based on a fuel load prescribed by the standard at 7 lb/ft³ and with a moisture content between 19% and 25%.
(7) Optimum overall efficiency at a specific burn rate (LHV).
(8) This appliance is officially tested and certified by an independent agency.
(9) Carbon monoxide.
|High-efficiency certified appliance||Yes, EPA 2020 approved|
|Maximum log length||22"|
|Log positioning||Loading over width|
|Flue outlet diameter||6"|
|Type of chimney||Liner - ULC-S635, CAN/ULC-S640, UL1777|
|Minimum chimney height (feet)||15'|
|Approved for a mobile home installation||No|
|Shipping Weight||540 lb. (245 kg)|
|Door type||Single, glass with cast iron frame|
|Glass type||Ceramic glass|
|Glass surface – dimensions (Width X Height)||18 7/8" X 11 3/4"|
|Glass air-wash system||Yes|
|Premium quality blower included (CFM)||144|
|Overall dimension (Height)||24 7/8"|
|Overall dimension (Width)||30 3/8"|
|Overall dimension (Depth)||29"|
|Door opening – dimension (Height)||9 7/8"|
|Door opening - dimension (Width)||19"|
|Firebox – dimension (Height)||12 7/8"|
|Firebox – dimension (Width)||22 7/8"|
|Firebox – dimension (Depth)||20 1/8"|
|Firebox lined with refractory bricks for better heat distribution||Yes|
|Stainless-steel secondary-air system improving gas combustion||Yes|
|Steel thickness – body||3/16"|
|Steel thickness – top||3/8"|
|Fireplace opening – minimum (Height)||26 1/4"|
|Fireplace opening – minimum (Width)||31"|
|Fireplace opening – minimum (Depth)||18 3/8"|
|USA standard (emissions)||EPA|
|Canadian Standard (emissions)||CSA B415.1-10|
|USA standard (safety)||UL 1482, UL 737|
|Canadian standard (safety)||ULC S628|
|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)
|Clearance – top (measured from the platform on which the appliance is installed)**||84"||84"|
|Clearance – combustible side mantle to unit||9"||9"|
|Clearance – combustible top mantle to unit||27"||27"|
|Clearance – combustible side wall to unit||19"||19"|
|Clearance – top shelf to unit||27"||27"|
* The information given on the certification label affixed to the appliance always overrides the information published in any other media (owner's manual, catalogues, flyers, magazines and/or web sites).
** Some appliances have been tested with a low ceiling. Before setting up your unit, refer to the installation manual.
3500 Wood Insert with Large Faceplate, Brushed Nickel Faceplate Trims and Brushed Nickel Door Overlay
3500 Wood Insert with Large Faceplate, Black Faceplate Trims, and Brushed Nickel Door Overlay
3500 Wood Insert with Medium Faceplate, Brushed Nickel Faceplate Trims and Brushed Nickel Door Overlay
3500 Wood Insert with Medium Faceplate, Black Faceplate Trims, and Brushed Nickel Door Overlay
3500 Wood Insert with Large Faceplate, Brushed Nickel Faceplate Trims, and Black Door Overlay
3500 Wood Insert with Large Faceplate, Black Faceplate Trims, and Black Door Overlay
3500 Wood Insert with Medium Faceplate, Brushed Nickel Faceplate Trims and Black Door Overlay
3500 Wood Insert with Medium Faceplate, Black Faceplate Trims, and Black Door Overlay
*NOTE: Shown with required faceplate, faceplate trim, and door overlay (not included). The faceplate, faceplate trim, and door overlay must be purchased to complete this unit.
Click to see options
5" Fresh Air Intake Kit
--- recommended to reduce or eliminate negative pressure problems
Offset Liner Adaptor
--- allows your flexible liner to be offset to the rear of an insert outlet.
--- enhances crackle of your fire
Click to see accessories
Adhesives, Gaskets and Insulation
About The Manufacturer:
Osburn is a North American manufacturer of quality wood and pellet heating
appliances, that was founded in 1979. The company mainly specializes in wood stoves, pellet stoves, wood fireplaces, wood inserts, and their related accessories. Osburn is widely known for the high-efficiency and performance of its products, for those looking to replace their traditional fireplaces with more sophisticated wood and pellet heating systems for their homes. The company also stocks up on Osburn gas fireplace parts and maintenance products.
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