The Powermate PM1300 Dust Collector has dual 4in. dust ports (or one 6in.). The cloth filter bag is made of a 30 micron material which aids in the filtration of all but the finest dust particles, and the large capacity collection bag reduces the number of bag changes. A digital timer can be set for up to 99 minutes, and an infrared sensor allows remote control operation. The all-metal duct improves rigidity and air flow. Four swivel casters and conveniently located handles allow for easy mobility.