"This Canarm Wall Exhaust Fan is an efficient, easy-to-install, low-maintenance solution for keeping room air fresh. Speeds qty. 1, Fan Diameter in. 12, Air Delivery CFM 1,640, Decibel Rating 63, Fits Opening W x H in. 15 x 15, Volts 115, Depth in. 14, Dimensions L x H in. 17 1/4 x 17 1/4, Speed RPM 1,625, Needs to be Hardwired Yes, HP 1/4, Amps 1.8. Totally enclosed and thermally protected motor Blades are galvanized and 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"