The DG KW4 H D1 230V is a certified vacuum for combustible dust.nExplosion Proof, this vacuum is Class I, Divison 2, Group D – Class II, Division 1 & 2, Groups E, F & G, NRTL certified.nA certified maintenance-free certified side channel blower suitable for 24/7 continuous duty provides safe & powerful performance (230V 60Hz 5HP).nThe vacuum is made of AISI304 stainless steel filter chamber and canister and provided with a Polyester, antistatic, Class M, star filter with an integrated filter cleaning system.nAn extra level of safety is guaranteed by the H14 HEPA filter (99.995% efficiency).nThe collection unit is made of a roll-out tank with 26-gallon capacity.