"This Canarm Wall Exhaust Fan is an efficient, easy-to-install, low-maintenance solution for keeping room air fresh. Speeds qty. Variable, Air Delivery CFM 5,050, HP 1/3, Amps 6.4/3.2, Volts 115/230, Dimensions L x W x H in. 29 1/4 x 16 x 29 1/4, Needs to be Hardwired Yes, Speed RPM 1,100, Fan Diameter in. 24, Dimensions L x H in. 29 1/4 x 29 1/4. Totally enclosed and thermally protected motor Galvanized blades are well-balanced for durability and efficiency Heavy wire chrome-plated OSHA guards Rugged steel welded box housing with durable powder-coated finish Aluminum louver shutters with long life nylon bushing"