The Flame XTD 1.5 insert is rated to heat approximately 850-1,600 square feet depending on location and fuel choice. Maximum output of 60,000 BTU's. This wood burning fireplace insert has a 1.8 cubic foot firebox, and an exterior dimension of 27"w x 20"h x 23.5"d. Minimum fireplace measurements are 29"w x 21.5"h x 14"d. Approved in the state of Washington. Unit features built-in air wash design to help keep the glass clean longer.
