"This Tjernlund Sidewall Radon Mitigation System protects your family and home from radon effectively and affordably without running unsightly PVC through the roof. Great for existing homes, this system saves money on materials and installation. U.S.A. Air Delivery CFM 160, Amps 0.8, Dimensions W x D x H in. 11 x 14.5 x 8.5, Power Cord ft. 6, Volts 120, Watts 50. An indoor-mount fan and low-profile discharge hood mounts unobtrusively to the sidewall of your home, requiring only a 4in. hole Sealed, galvanized steel fan housing with 3in. PVC connectors requires no additional couplings Internal blades within heavy-gauge aluminum termination hood adjust to provide additional dilution and increase velocity for homes with more compacted sub slab soil Includes radon fan, mounting bracket, termination hood and installation hardware 120 Volts"