Fantech 1SDE42FB Exhaust Fans; Blade Size: 42; Drive Type: Belt; Blade Size: 42 in; Type of Enclosure: Drip-proof; CFM: 17570; Horse Power: 1 hp; 1 hp old; Rough Opening Width: 46 in; Rough Opening Height: 46 in; Horsepower: 1 hp; 1; 1 hp old; Voltag