Used approximately 400 gallon stainless steel vertical insulated storage tank. 49" diameter X 48" high straight side. Flat welded top, cone bottom. Top fittings: 1/3 hinged lid, (1) 1", (1) 2", (1) 3", (1) 4", and (1) 5' center opening. 4" center bottom drain. (1) 3" side bottom outlet and (1) 6" side top inlet. Mounted on (4) carbon steel legs, giving 27" clearance.