Ruwac WS Series Ruwac's WS Series of industrial vacuum cleaners feature cost efficient functionality and performance for all cleaning applications. Save time on clean-up with point of source extraction for handheld tools and vacuum-assist sanding. Complete portability makes general housekeeping fast and easy. The oversized MicroClean filter is 99.9 percent efficient at 0.5 micron, making it ideal for fine powders and dust collection and containment. A newly-redesigned maintenance-free filtration system drops loose debris out of the filter, extending filter life and reducing downtime. Oversized filters can collect large amounts without loss of suction and offer a 3 year warranty. The WS Series can accommodate long hose lengths and multiple users, or can be adapted for central vacuum systems, making the vacuums versatile and adaptable to any application with fine powder or dust. Compression cast composite fiberglass housing is durable and a large drop down dustpan is triggered with a foot lever to permit dust-free emptying. All machines are HEPA-ready for absolute filtration and a variety of options and accessories are available. The WS Series is ideal for loose, fine powders or dust, and ensures only clean air is returned to the environment.