R452A/R404A/R507 are the main refrigerants for LBP commercial refrigeration. Optyma? condensing units can work down to -45?C (-49F) evaporating temperature. Optyma? for low-temperature applications is widely used in cold rooms to freeze, commercial refrigerators and freezers, display windows, island cabinets, hotel mini bars, medical and laboratory equipment. Capacity: 2) Optimised for R404A at 32?C ambient.