Material: ALUMINUM/PLASTIC Assembled Product Length: 96" Assembled Product Height: 4" Assembled Product Width: 4" Diameter: 4" . Connects clothes dryer exhaust port to exhaust duct Clamp-free design No tools required Main duct connection elbow with friction fit connection to dryer Plastic is made of UL94 rated, flame-resistant plastic for a safe connection to clothes dryer exhaust port Enables clothes dryer to be placed close to a wall, saving space and preventing the clothes dryer from crushing the duct D2D easily removed from dryer exhaust port to allow for regular cleaning KIT INCLUDES: 4" dryer to duct connector (2 separate pieces that consumer assembles) 1 extension piece 4" x 8' ProFlex duct