This duct is not really quite adaptable and is not hard to puncture. Went looking to tighten the hose clamp, the duct ripped open up.The dryer duct, or tube, is at the center of dryer venting. Important types of dryer ducts involve: Aluminum Foil Duct: Cheap and simple to locate, foil accordion-model ducts are the most common variety of dryer duct.