Lambro 381 Worm Gear Clamp, 6 in Duct, Clamping Range: 5-5/8 to 6-1/2 in, Steel, Zinc

Used for secure connection to flexible aluminum duct.

Features:

• Unique design allows for easy-to-tighten convenience

Lambro 284L Worm Gear Clamp, 4 in Duct, Clamping Range: 3-9/16 to 4-1/2 in, Steel, Zinc

These clamps are made up of zinc-plated steel and are ideal for the installation of most home and industrial dryers. Their unique design allows for easy-to-tighten convenience. Clamps can also be used on most bath fans and other applications.