Stainless Steel Jacketed Tank-350 Gallons. Inside straight wall dimensions: 4 ft. 2 in. L x 3 ft. 3 in. W x 3 ft. 7 in. H. Manhole cover diameter: 18 in. CIP sprayball. Inlets: (2) 2-1/2 in. dia. S-line fittings, (1) 3 in. dia. S-line fittings, (2) 1 in. dia. NPT fittings (jacket). Outlets: (1) 1-1/2 in. dia. S-line fittings, (1) 1 in. dia. NPT fittings (jacket). Overall dimensions: 5 ft. 1 in. L x 3 ft. 10 in. W x 6 ft. 5 in. H.