Spark Resistant Blower Belt Drive Backward Incline With Drive Package Wheel Dia 20 In CFM @ 0250-In SP 4164 @ 0500-In SP 3863 Sones @ 0750-In SP @ 5 Ft 12 Voltage 230/460 60 Hz 3 Phase Full Load Amps 25/13 Motor HP 3/4 Bearing Type Ball Housing Height 39 3/8 In Housing Width 41125 In Housing Depth 37 5/8 In Inlet Dia 21 1/8 In Discharge Height 39 3/8 In Discharge Width 15 7/8 In Includes Weatherproof Drive Cover