Stainless Steel Mix Tank. Approximate capacity: 275 gallons. Lightin Mixer: Model: ND-1. S/N: 661149. 1/3 Hp, 1725/1425 rpm, 220/440 V, 1.25/.63 A, 60/50 Cycles, 3 Phase. 8 in. dia. propeller. 7/8 in. dia. shaft. (1) Milltronics ultrasound transducer: S/N: 2003/2545659. Inlets/outlets: (1) 3 in. butterfly valve, (1) 2-1/4 in. FNPT, (1) 2 in. FNPT ball valve, (1) ¾ in. MNPT. Inside dimensions: 3 ft. 6-1/2 in. dia. x 4 ft. straight wall. (321 gallon capacity.) Overall dimensions: 4 ft. 5 in. L x 3 ft. 8 in. W x 7 ft. 6-1/2 in. H.