(2) Dayton wall mount electric heaters - 17,100 BTU's. Model: G73. Fan CFM: 270. Temperature range: 40° F to 85° F. The G73 Dayton electric shop & garage Heater Includes a Built-In Thermostat with a thermal cutout that automatically shuts off the unit if it starts to overheat. Power requirements: 208/240 V, 21 amps, 60 Hz, single phase with a 30 amp circuit breaker. Overall dimensions: 1 ft. 2 in. L x 10-1/2 in W x 1 ft. H.