Osburn Matrix 2700 Wood Insert (OB02700), EPA 2020 certified wood-burning appliance from the Osburn 2026 Tri-State Distributors price list (effective March 1, 2026). High-capacity insert rated up to 80,000 BTU/h at roughly 70-74% efficiency, with a 176 CFM blower included. 2.5 ft³ firebox accepts logs up to 20 in; comes standard with a cast iron faceplate and one of the largest glass viewing areas in its category. Recommended heating area: 750 - 2,200 ft². Maximum burn time: 8 h. Required: select your Door Overlay below — these are separate, required components priced individually and must be chosen to complete checkout; they are not included in the base price shown here.