The Dryer to Duct Connector Kit offers a safe and efficient way to connect your dryer transition duct to the back of your dryer. The kit includes a 4 in. x 8 ft. aluminum foil dryer transition duct a plastic connector piece. An optional plastic extension piece is also included for those dryers with recessed exhaust ports.Connector piece is made of UL94 rated, flame-resistant plastic for a safe connectionConnector piece helps the duct from being crushed and improves the air flow from the back of the dryerConnector piece is also friction fit to the dryer for an easy connection that does not require clamps or duct tape for attachmentConnector can be easily removed from the back of the dryer to quickly and easily clean out lint and debris form the dryer ductFlexible aluminum foil dryer transition duct in this kit is 2158A UL listed and marked for safe dryer ventingDryer transition duct in this kit is UL2158A listed and marked for safe dryer venting