Imperial 4-inch Metal Worm Gear Clamp

This Imperial 4-in Metal Worm Gear Clamp is ideal for a wide range of applications including clothes dryer and bath fan venting. Use the multipurpose clamp to fasten ventilation duct, or to fasten duct to a clothes dryer exhaust port or bath fan. Designed for lasting reliability, this sturdy duct clamp has a durable all-steel construction and can withstand up to 40-lbs of torque per square inch. It can be used with semi-rigid or rigid aluminum ducts, and is easily adjustable with a screwdriver for a secure fit every time.