Used 500 gallon Paul Mueller 316L Stainless Steel jacketed, agitated reactor. Rated 100 psi @ 325 F internal; rated 120 psi @ 325 F on the 304 Stainless Steel dimple jacket. Full vacuum. 4' 4" width x 4' length. Dished top and bottom. Mounted on legs. (Qty. 4 available)