(4) Russell Coil Company 4-Fan Evaporators. Model: SU44-600HG. Refrigerant: R-717 (Ammonia). Approximate capacity: 5 tons for a -10°F room with a -20°F suction temperature. Unit surface area: 1,832 sq. ft. Fins per inch: 4. (4) 20 in. diameter fans, motors: 1/6 hp, 230 V, 11.2 A, 60 Hz. Fan diameter: 20 in. Unit displacement: 10,800 cfm. Inlets: (1) 1/2 in. dia. port. Outlets: (1) 4-bolt 1-1/2 in. dia. flange, (1) 3/4 in. dia. port. Units are equipped with hot gas defrost for low temperature applications. Estimated weight: 560 lbs. Overall dimensions: 10 ft. 4 in. L x 2 ft. 9-1/2 in. W x 2 ft. 2-1/2 in. H.(ACN200)(H15).