Fantech 1SDE36EB Exhaust Fans; Blade Size: 36; Drive Type: Belt; Blade Size: 36 in; Type of Enclosure: Drip-proof; CFM: 13220; Rough Opening Width: 40 in; Rough Opening Height: 40 in; Projection: 8 in; Horsepower: 3/4; Voltage: 115/230; Phase: Single