KTM 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 wome 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 Seafoam Green 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 10 year warranty against defects in workmanship or materials. Filters and fan wheels are excluded. Before operating any of these dust collection units, ensure you are aware of and that you meet the current regulations for fire, NFPA, NFC, OFC or other safety precautions for your particular area. Each municipality may have regulations regarding this type of equipment and its operation before the equipment is installed and operated. Kraemer Tool assumes no liability or responsibility if operating equipment outside of the required regulation.