Ruwac’s Conductive Series General Housekeeping Vacuums are NFPA 652 compliant for ordinary locations. Intermittent duty, Portable Industrial Vacuums which are fully conductive, grounded and non-sparking by impact. The vacuum housings are indestructible and come with a LIFETIME WARRANTY. Ruwac’s exclusive Microclean primary filters are 99% efficient and include a 3 YEAR WARRANTY. Ruwac USA engineered these machines to be the LOWEST COST MAINTENANCE vacuums on the market. This means less filter changes, less filter clogs, less downtime and most importantly, MORE MONEY IN YOUR POCKET.