Material: ALUMINUM/PLASTIC Assembled Product Length: 96" Assembled Product Height: 4" Assembled Product Width: 4" Diameter: 4" . Complete kit for ventilating your dryer UV resistant plastic Louvered backdraft Keeps pest and birds from entering your vent Can be mounted on brick, concrete or siding J-channel flange sold separately, or already attached to cap / hood, for use when installing on exterior siding up to 1" thick KIT INCLUDES: Includes 4" ProGard cap 4" diameter aluminum pipe 2 plastic clamps 4" x 8' ProFlex duct