This 25 ft. Supurr-Flex flexible transition duct from Deflecto can be used for dryer venting and is also suitable for bathroom venting, HVAC systems, and general-purpose venting. The flexible dryer vent hose is made with 5-ply all-aluminum construction to offer superior fire suppression. It is easy to install and can easily be cut to the length of the specific venting application. Note: manufactured lengths over 8 ft. are not UL 2158A listed for dryer venting.