Ashley Hearth Products Direct Vent Natural Gas Heater, Model DVAG11N. Rated at 11,000 BTU, this unit uses direct vent technology to draw combustion air from outside and exhaust fumes outdoors, making it safe for interior wall installation without a chimney. Measures 17.36"W x 6.61"D x 20"H. Condition is like new and in original box with no damage or missing parts noted. Ideal for supplemental heating in small rooms, cabins, or additions. Natural gas connection required.