Semi-rigid dryer duct is a type of ductwork used to connect a clothes dryer to a vent outside the home. It is made of a flexible material that can be bent and shaped to fit around obstacles, but it is also sturdy enough to maintain its shape and prevent kinks or collapses. Semi-rigid dryer duct is typically made of aluminum or plastic and is available in various diameters to accommodate different dryer models. It is an essential component of a clothes dryer system and helps to safely vent hot, moist air from the dryer to the outside, preventing buildup and potential fire hazards.