600 gallon Whiting Metals Inc. vertical poly lined T-316L stainless steel tank. 58" diameter x 48" high straight side. Flat bolted 1/3 hinged top cover. Slant bottom. 1 1/2" side bottom drain. 4" side flange. 3" center top fill. Mounted on short legs. Rated atmosphere @ 100 degrees F. Built 1997.