Perma Duct 4" - 25 ft

Superior performance in premium air ducting. Though it is value priced, it is comparable to the leading premium ducting on the market. This ducting is air-tight, easy to install, and resists tearing and punctures. The smooth interior also aids in noise reduction. It is available in six different sizes, and sold in 25' lengths. Set of 2 stainless steel clamps included.