"This Tjernlund Register Booster Fan dramatically boosts airflow in your 4in. x 12in. floor register in less than a minute. U.S.A. Air Delivery CFM 75, Watts 20, Power Cord ft. 6, Amps 0.3, Volts 120, Dimensions L x W x H in. 13 1/2 x 5 x 5. Easy-to-install fan is 50 quieter than prop-style fans Blower wheel is screened to protect small fingers and block debris Plugs into standard 120V outlet Includes paintable commercial-grade grill and 6-ft. power cord"