If you are ready to take your dust collection system to the next level, make this 3 HP Dust Collector your first choice. The increased air suction capacity will allow you to build a bigger and more complex dust collection system with room to spare. Also, the double collection setup means less downtime emptying and shaking out bags, which means you'll be able to spend more time actually making the dust! CSA certified meeting CSA C22.2 #243-M91 and UL 1017-4th standards! For wood dust only. Models manufactured after June 2015 come with a 2.5 micron felt upper filtration and a plastic (PE) lower collection bag. The upper 2.5 micron bag (D4572) and lower plastic bags (D4573-5pk) can be purchased separately for any collectors that do not include them.