Dundas Jafine MLFVK48E Semi-Rigid Aluminum Dryer Vent Kit Contains 4" x 8' Semi Rigid flexible all Aluminum Duct, 4" louvered exhaust hood, and 2 metal clamps Ideal for use in gas and electric dryer installations Heavy duty construction for long and depandable service Duct is all metal for ducability yet flexible to aid in installation Can be used for most 4" exhaust applications including dryer, bathroom fan and other exhaust needs