This 2 HP dust collector delivers powerful dust collection exactly where you need it. With 1550 CFM air flow this portable dust collector is more effective than many big stationary units. The upper filter bag screens out particles as small as 5 microns – 1/10 the diameter of a human hair. The lower collection bag is translucent so you can see at a glance when it’s time to empty. Four locking swivel casters let you position this dust management system next to the machine you’re using.