This updated version of the Matrix wood insert will seduce you with an average particle emission rate as low as 1.54 g/h. The latest modifications made to this box are well in tune with the industry standards required for 2020. Although it retains a unique style that is both massive and sleek, we have reviewed the door mechanism to make it more functional. Adding a set of intermediate trim panels may be required to complete your masonry hearth. Always the same legendary Osburn quality.

Appliance Performance

Fuel type :	Dry cordwood
Recommended heating area-ft² : ⁽⁾	500 - 2,100
Overall firebox volume :	2.4
EPA loading volume-ft³ :	2.02
Maximum burn time : ⁽⁾	8 h
Maximum heat output (dry cordwood) :	75,000 BTU/h (22.0 kW)
Overall heat output rate < :	14,800 BTU/h (4.34 kW) to 28,600 BTU/h (8.38 kW)
Average overall efficiency (EPA cribs/Douglas fir) :	N.A. (HHV)	N.A. (LHV)
Average overall efficiency (dry cordwood) :	69 % (HHV)	74 % (LHV)
Optimum efficiency :	77 %
Average particulate emissions rate :	1.54 g/h
Average CO :	89.4 g/h

General Features

Combustion technology	Non-catalytic
High-efficiency certified appliance	Yes, EPA 2020 approved
Maximum log length	20"
Log positioning	Loading over width
Chimney diameter	6"
Flue outlet diameter	6"
Type of chimney	Liner - ULC-S635, CAN/ULC-S640, UL1777
Minimum chimney height (feet)	12'
Baffle type	C-Cast
Approved for a mobile home installation	No
Shipping Weight	484 lb (220 kg)
Door type	Single, glass with cast iron frame
Glass type	Ceramic glass
Glass surface – dimensions (Width X Height)	19 5/8" X 11 7/8"
Glass air-wash system	Yes
Premium quality blower included (CFM)	90
Overall dimension (Height)	25 1/8"
Overall dimension (Width)	36 1/8"
Overall dimension (Depth)	23 1/8"
Door opening – dimension (Height)	8 3/4"
Door opening - dimension (Width)	17 1/2"
Firebox – dimension (Height)	11 7/8"
Firebox – dimension (Width)	21"
Firebox – dimension (Depth)	16 3/4"
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	5/16"
Fireplace opening – minimum (Height)	23 5/16"
Fireplace opening – minimum (Width)	28 7/8"
Fireplace opening – minimum (Depth)	19 5/8"
USA standard (emissions)	EPA / ASTM WK47329
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)
Warranty	Limited lifetime

Matrix Wood Insert