Vessa 4" Semi-Rigid Aluminum Duct — 10 ft Dryer Vent, Steel Collar

Vessa 4-inch semi-rigid aluminum duct is the connector a dryer or bath-fan run depends on — a corrugated aluminum body that extends to a full 10 feet, bends around a tight joist or cabinet without kinking, and holds the shape it's set in rather than sagging back. Both ends are finished with a rigid steel collar, so it seats cleanly onto a standard 4-inch dryer or fan port at one end and the vent cap at the other — no crimping, no hunting for separate fittings. The wall is drawn from non-combustible aluminum and built to resist crushing, keeping its bore open behind an appliance pushed back against it, where foil-and-wire flex duct folds flat and strangles the airflow the dryer is rated for. It's the quiet piece of the install that decides whether the appliance upstream actually moves the air it promises, without the collapse or annual re-taping cheaper duct demands.