Maximum Air Flow 735 cfm, Extraction Arm Diameter 8 in, Extraction Arm Length (Maximum) 7 ft, Filter Area 538 sq ft, Filter MERV Rating 14, Filter Type Disposable Cartridge Filter, Spark Arrestor, Input Voltage 115V AC, Motor Horsepower (Maximum) 1 hp, Series Prism, Compatible Filter Manufacturer Part Number KP1673-1, KP1673-5