"This Canarm Wall Exhaust Fan is an efficient, easy-to-install, low-maintenance solution for keeping room air fresh. Amps 4.0, Speed RPM 1,625, Volts 115, HP 1/3, Dimensions L x W x H in. 23 1/4 x 15 x 23 1/4, Fan Diameter in. 18, Air Delivery CFM 3,270, Dimensions L x H in. 23 1/4 x 23 1/4, Speeds qty. 1, Needs to be Hardwired Yes. 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"