Letsch Corporation Cook/Cool Tank- 550 Gallon. Inside straight-wall dimensions: 4 ft. 10 in. L x 3 ft. 6 in. W x 4 ft. 4-1/2 in. H. Number of heat/cool tubes: 11. Tube dimensions: 1-1/4 in. dia. x 3 ft. 6 in. L. Tube volume: 2.5 gal. Inlets: (1) 1-1/4 in. dia. FNPT fitting, (1) 1-1/2 in. dia. FNPT fitting, (1) 4 ft. 10 in. L x 2 ft. 6 in. W product infeed. Outlets: (2) 3/4 in. dia. FNPT fittings, (1) NPT fitting, (1) 1 in. dia. port (jacket), (1) 2-1/2 in. dia. S-line drain port, (1) 1/2 in. dia. port. Overall dimensions: 5 ft. 11 in. L x 4 ft. 3 in. W x 5 ft. H.