Active Air Premium Ducting, 4" x 25' 44lb Collapses flat for storage in

Collapses flat for storage in the handy zippered case

Suitable for use in gardens

membranes and other biochemical processes

To be used in the vegetative stage

The key ingredient is naturally derived crustacean meal

Active Air Premium Ducting, 4" x 25' 44lb Collapses flat for storage inActive Air Premium Ducting, 4" x 25' Product Details Active Air Premium Ducting is made of tough 3 ply aluminum foil laminate. It is designed for air cooling and can be used in different forms of heating and ventilation applications. This product is made to resist puncture and tears. One continuous and corrosion resistant helix wire is placed in the duct wall for structural support. Active Air Premium Ducting is perfect for the air cooled reflectors