50 ft Mini Split Line Set, 3/8 5/8 OD Copper Tubing with Triple-Layer PE Insulation, Pre-Coiled for AC Heat Pump

This 50 ft mini split line set gives HVAC pros and serious DIY homeowners everything they need for a clean refrigerant run on a residential ductless install. The set ships with 3/8 5/8 OD refrigerant-grade seamless copper tubing, sized to match the connection spec on common 9,000 to 36,000 BTU mini split heads and to handle standard R-410A working pressures. A thick triple-layer PE foam jacket wraps both lines from end to end, cutting condensation sweat and conduction loss so the system runs at rated efficiency and so drywall, framing and floors are protected from drip damage. The lines ship pre-coiled with sealed end caps, which keeps moisture and rodent debris out of the copper before you flare and connect. At 50 ft, the run is long enough for most single-zone residential installs without forcing you to join multiple shorter sets. Designed for standard ductless mini split AC and heat pump installs from most major brands.