This Dryer Vent Kit inlcudes up to 8 feet of semi-rigid Dryer Transition Duct, which is UL listed 2158A and fire-resistant. The kit also includes two Hooker-Upper duct connectors with protectors to easily attach duct to the dryer and the wall vent opening. This dryer venting kit is easy to install. No clamps, tools or tape needed. Protects duct from being smashed behind dryer which can cause unsafe dryer operation and longer drying times. Can be used with gas or electric dryers. Made in the USA.