PDCS Portable Dust Collectors come in many different filter areas, with 1, 2 or 4 bags with 6 or 12 top bags and 1 or 2 bottom bags. Filterbags are made from polyester beane or felt. They have an efficiency rating of 99.97% on particles 1 micron and larger and are washable. Theses dust collectors are for inside use only. All Portable collectors come with heavy duty casters for easy movement. All "S" type collectors are available with dust tight magnetic switches as an option in 3 phase electrics only. Options include silencers to keep the noise to under 80 dBA. as well as steel drums instead of a bottom bag. And multi port inlet connector boxes all priced separately. Std finish of the 14ga thru 20 ga manufactured units is machine over rust inhibiting primer. Other colours are available to suit at additional cost. All motors are TEFC HI-Efficiency type to meet new standards. All units are covered with a 1 year warranty against defects in workmanship or materials. Filters and fan wheels are excluded.