The BF-20 produces an inviting atmospheric warmth quickly and efficiently.The BF-20 is equipped with a hydraulic thermostat that modulates from 8,500 BTU to 20,000 BTU for continuous temperature control Empire Vent - Free Heaters are virtually 100% fuel efficient No heat is lost since the BF-20 does not require outside venting Empire Vent - Free units do not require electricity to operate Total comfort for half the cost of electric heat Safe operation with auto shut - off safety controls Mounts on floor or wall Proudly Made In USADepth: 6.5 Features: Thermostat Height: 22 Power Source: Gas Width: 18