UL Approved Explosion Proof Vacuums are ideal for pick-up of hazardous material such as flammable liquids, finely pulverized dust and more. This heavy-duty, electric vacuum operates wet or dry, in Class I, Group D and Class II, Group F & G atmospheres and is available with a 15-gallon tank. It is simple to maintain, UL Listed and available with a patented H.E.P.A. filter which is 99.99% efficient at 0.12 microns. Contact American Vacuum today to learn more about explosion proof vacuum cleaners.