Refrigerant Suitability:R448A; R449A; R404A; R407A; R407C; R407F; R507A; R452A; R513A, R134a. Ideal for VEGETABLE ROOMS COLD ROOMS, CHILLERS, FRIDGES & DISPLAY CABINETS. & 3 phase systems and compressors for cold rooms & Freezer rooms available as well.