Kramer Industries Hot Gas Defrost Evaporator- 7 Ton. Model: TV-750D. Indoor use only. Refrigerant: R-502. Capacity: 86,300 Btuh @ +25 °F and 10 °TD. Airflow: 13,100 cfm. Air throw: 100 ft. Fins per inch: 4. (2) 40 in. Direct drive high efficiency propeller fans. (2) Marathon Fan Motors, 3/4 hp. The TV model unit coolers are specifically designed for commercial freezer applications. These units are suitable for low and medium temperatures in the range of -40°F to +25°F. Inlet: (1) 1-1/2 in. dia. copper port. Outlets: (1) 1 in. dia. drain. (1) 1 in. dia. copper port. Overall dimensions: 9 ft. 2-1/2 in. L x 30-1/2 in. W x 74-1/2 in. H.(ACN56a).