The Minuteman x839 H.E.P.A. Vacuum Series is available with polyethylene, stainless steel or painted tanks to best suit your needs. This series is easy and economical to use. The Tanks: Standard as dry only units, all 15 and 55 gallon vacuums have wet/dry recovery capabilities with an optional 1:1 adapter and water shut-off. The 55 gallon vacs are equipped with a painted tank, dolly and handle for easy maneuverability. The Lid Assemblies: Three separate vacuum motor assemblies, with waterlifts of 85″, 105″ and 130″ can be matched to several tanks to customize the units.