Osburn Horizon Wood Fireplace (OB04010), EPA 2020 certified wood-burning appliance from the Osburn 2026 Tri-State Distributors price list (effective March 1, 2026). The largest fireplace in the Osburn wood lineup, rated up to 95,000 BTU/h with a 4.28 ft³ firebox accepting logs up to 25 in and an 8" flue outlet (vs. 6" on the rest of the line). Moulded refractory brick lining and blower included. Recommended heating area: 1,000 - 2,800 ft². Maximum burn time: 11 h. Required: select your Faceplate Style and Brick Panel 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.