ACME remote air-cooled condensers are designed for heavy duty, with a high anti-corrosion characteristics. Standard finish galvanized cabinet . (Baked enamel or aluminum cabinet optional.) Industrial type fans with air-over motors and internal thermal protection . Copper tube with aluminum fin coil; (Optional copper fins offer additional corrosion protection for harsh environments. Compatible with refrigerants R-22, R-12, R-512, R134a, R507, and R-404A.