Introducing the Powermatic 20 in. 2 Micron Canister kit for Powermatic Dust Collectors. This micron canister filter system is superior to standard filter bags, capturing up to 86% of 1 micron particles and 98% of 2 micron particles. The micron canister kit features an occasional rotation of the handle that will clean the pleated filter, dislodging residual dust into the collection bag. The hand knobs with the micron canister kit make for rapid installation and removal. Get the job done right with this micron canister kit!