Deflecto Supurr-Flex Aluminum Dryer Vent Duct, Flexible, Fire-Resistant, 4 Inches Dia. x 8 Feet, Silver (F0408B/4) Multi-layered, flexible aluminum dryer duct is fire-resistant and easy to install Use for clothes dryer duct, fresh air intake and non-insulated ventilation duct Can be used with gas and electric dryers UL Listed Clothes Dryer Transition Duct Listing No.: 2158A Can be cut to length of specific venting application