Used Industrial Air Inc. 5000 gallon vertical stainless steel storage tank. 7'-6" diameter X 15' high straight side. Internal rated ATMOS @ ambient temperature. Flat top, slight cone bottom. Top fittings: 20" manway, (1) 1" and (1) 2" threaded inlets. 1 1/2" threaded center bottom outlet. Top center opening for agitator (agitator not included) (4) internal baffles. Mounted on legs giving 14" clearance to floor.