"The Dryer Vent Easy Dock Kit includes ACE EZDOCK connector and 8 feet of Supurr-Flex Semi-Rigid Duct. Connector lets you quickly disconnect dryer duct from the wall to clean lint out of your dryer exhaust vent. One half of the two-piece connector is a ?dock? which is installed at the dryer vent opening in the wall. The male end of the connector can be attached to the duct at the back of the dryer using 4 inch diameter clamps (not included). Connecting the duct to the wall is as easy as inserting the male end into the dock and snapping the two pieces together. The Easy Dock can also be used to connect two pieces of duct for venting applications that require longer runs. Use with Deflecto?s Appliance brush and Dryer Vent Cleaning Kit to clear lint build-up regularly and reduce the risk of a dryer fire. * * "