Dust Extraction Filters 220mm Diameter x 1800mm Long A duct extraction filter sock that is 220mm diameter and 1800mm long with a double spring cuff one end and a cap-end with an 8mm hole the other. The double spring cuff pops into the tray at the bottom of your Extraction Unit and the capend is attached to a filter rack in the roof of your extraction unit. These size filters are used in our own Extraction Units. Specification
