Stainless Steel 304 overall construction. Workable Volume: 30 Gallons. 15psi dimple jacket for heating or cooling with insulated stainless cladding. Jacket does not include a heating or cooling source, please ask your sales rep for options. The vessel interior holds NO pressure. Dimension : 20″ L x 20 ” W x 68″ H Crated Dimension of 30 Gallon Jacketed Mixing Tank: 45″ L x 36″ W x 76″ H 1.5″ tri-clamp outlet with sanitary butterfly valve. Top 2 x 1.5″ tri-clamp port. Top spring-loaded hinged lid, with a locking mechanism in vertical holding position. Tank inner side is electropolished to 0.8µm( RA32 uin, #4 food-grade finish) sanitary finish. 1 HP stainless Lesson motor, 5:1 speed reduction gearbox. 110v input, integrated Variable frequency speed control, 0 -350 RPM adjustable. 5:1 speed reduction gearbox. Impeller a 6″ OD marine propeller.