Ducting

Features Available in 4", 6", 8", 10", and 12" Stainless steel and rust resistant Worm drive adjustable w/screwdriver for a super-secure fit Two per pack

Made of galvanized steel. Prevents reverse air flow when fans are shut off. Saves CO2 and prevents odors from flowing backwards. Rubber gasket pre-installed on exterior for an air tight seal.

DL Light Proof Ducting is strong, durable, and as the description indicates...light proof. That means that when properly installed no light will penetrate the ducting and disrupt your plants' lights out schedule. The ducting is also durable with multiple layers of inner liners to protect from punctures from sharp objects.

The Ideal-Air Supreme Silver/Black Flex Ducting is a high-quality, 3-ply aluminum foil duct. The duct has a black interior core and a silver reflective exterior. 100% made in the USA,this ducting is constructed with a spring steel wire helix, which is then encapsulated in a polyester, aluminum foil and polyester tri-laminate. Specifically oversized by 3/8 in to fit any application. Duct length is 25 ft and includes 4 zip ties per bag.