Gas Wall and Ceiling Unit Heater Gas Type NG Combustion Type Field Convertible Fan Type Propeller BtuH Input 400 000 BtuH Output 384 000 6 464 cfm Air Flow 31.2 A Full Load Amps Gas Connection 3/4 in Flue Dia 4 in O.C. Mounting 41 3/4 in Height 34 7/8 in Width 54 13/16 in Depth 42 in Indoor Air Discharge Height 32 1/8 in Indoor Air Discharge Width 26 in Heater Voltage 115 V AC 60 Hz Air Temp Rise 55 Degrees F Ignition System Direct Spark