(2) 1995 Krack Evaporators- 4 Ton (each). Model: MK44-484A-230. S/N's: 451424-01A and 451424-01B. Refrigerant: R-12, R-22, R-502. Capacity: 48,400 Btuh @ 10 °F TD. Design pressure: 300 psig. Airflow: 11,840 cfm. (4) fins per inch. Unit for use in walk-in coolers or refrigerated warehouses. Krack MK series coolers are designed for rooms that need lower velocity air-flow to avoid throwing water, or require less air volume. For medium temperature rooms. Air defrost. (4) 19 in. dia. fans. Inlets: (1) 1-5/8 in. dia. copper pipe. Outlets: (1) 5/8 in. dia. copper pipe. Overall dimensions: 10 ft. 7 in. L x 26 in. W x 26-1/2 in. H.(ACN25).