Gas Wall and Ceiling Unit Heater Gas Type LP Combustion Type Field Convertible Fan Type Blower BtuH Input 400 000 BtuH Output 332 000 4 724 cfm Air Flow 20.8 A Full Load Amps Gas Connection 3/4 in Flue Dia 6 in O.C. Mounting 48 5/8 in Height 34 in Width 55 1/4 in Depth 56 1/8 in Indoor Air Discharge Height 24 1/2 in Indoor Air Discharge Width 48 3/4 in Heater Voltage 115 V AC 60 Hz Air Temp Rise 65 Degrees F Installation Height 8 to 20 ft Ignition System Direct Spark