Ducted Evaporative Cooler, Drive Without, Air Flow 7500 to 8500 cfm , Evaporative Cooler Cooling Capacity 2000 to 4000 sq. ft., Drive Type Belt, Motor HP 3/4 or 1, Evaporative Cooler Voltage 115, Speed Variable, Discharge Down, Width 41-1/4 In., Depth 41-1/4 In., Height 53-5/8 In., Duct Opening Length 21-3/4 In., Duct Opening Width 21-3/4 In., Media Aspen, Pad Thickness 2 In., Pump Voltage 115, Power Cord Length 8 ft., Water Connection 3/8 In., Fill Type Hose, Operating Weight 397/403 lb.