The Thermo-Split 1/4" air conditioner copper tube with 9mm coating is a pre-insulated, high-purity copper line specifically engineered to connect the outdoor condenser to the indoor evaporator unit in split AC and heat pump systems. Tube Size: 1/4 inch (6.35 mm) Outer Diameter (OD). Coating Thickness: 9 mm extruded closed-cell expanded polyethylene (PE) insulation. Material: High-purity copper (typically C12200 / Cu-DHP >99.9% pure) designed for high-pressure HVAC applications. Refrigerant Compatibility: Suitable for standard and modern refrigerants including R-32, R-410A, and R-407C.

Air conditioner copper tube, Thermo-Split, 1/4", 9mm coating