Thermokey offers an industrial refrigeration unit cooler range with nominal capacities from 7 kW to 126 kW for different temperature ranges: +15°C to -35°C with the use of three different diameter fans (500, 560 e 630 mm) and modules having the same length and different fin spacings 4,5 – 7 – 11 mm. The units can work with ammonia , freon and glycol. Thermokey has designed a commecial unit cooler series using three different fan diameters (300, 350 e 450 mm) and the same module length with capacities from 1,3 kW to 13,9 kW with different fin spacings 4,5 – 7 – 10mm . The casing is in aluminium or stainless steel on request. different de defrosting systems are available. All the unit coolers for direct espansion are built with internally grooved tubes.