(3) Krack 6-Fan Evaporator Units. Approximate capacity: 10 tons. Refrigerant: R717 (Ammonia). Fins per Inch: 6. Rows: Coil row depth: 1 ft. 3 in. Included: housing, fans, drain pan and coil end covers. Cover dimensions: 15 ft. 8-1/2 in. L. x 1 ft. 10 in. W. x 3 in. H. (6) 1 ft. 9 in. dia. direct drive prop fans. (6) Franklin electric motors, 1/3 HP, 1140 rpm, 208-230/460 V, 60 Hz, 3 phase. Units are ideal for low headroom applications and smaller room sizes. Inlets: (1) 1-3/4 in. dia. port, (1) 2 in. dia. port. Outlets: (1) 3/4 in. dia. port. Overall dimensions: 15 ft. 8-1/2 in. L. x 3 ft. W. x 2 ft. 3 in. H.(ACN110)