Supply Ventilator Centrifugal Belt Drive With Drive Package Wheel Dia 20-1/2 In. CFM @ 0.125-In. SP 14602 Sones @ 0.250-In. SP @ 5 ft 53 Mounting Location Roof Housing Height 46 In. Housing Length 46 In. Housing Width 84 In. Base Width 44-1/2 In. Base Length 44-1/2 In. Max Inlet Temp 120 Deg. F Voltage 208-230/460 3 Phase 60 Hz Motor HP 10 Requires Roof Curb for New Installations Includes Washable Aluminum Filters and Drive Package