Boost the efficiency and range of your air conditioning systems with this durable copper pipe tubing extension. Perfect for extending mini split AC systems, heat pumps, and a wide variety of HVAC setups, this copper pipe features a 1/4-inch O.D. high-pressure pipe and a 1/2-inch (or 3/8-inch)O.D. low-pressure pipe. It’s designed to be versatile enough for both residential and commercial applications. The triple-layer insulated construction provides maximum durability while maintaining excellent thermal retention. Installation is easy—simply unroll, cut to your desired length, and weld it to the original piping. Upgrade your air conditioning systems with this reliable extension for a smooth, long-lasting performance. Features Outstanding Performance: Unlike copper-aluminum alternatives, these premium 1/4" O.D. high-pressure and 3/8" or1/2" O.D. low-pressure pure copper pipes deliver superior thermal conductivity. Experience enhanced cooling efficiency, improved tensile strength, and long-lasting durability for consistent performance over time. Advanced Triple-Layer PE Insulation: This mini split line set features an embossed polyethylene film, heat-resistant foam, and thickened insulating cotton. This robust insulation not only meets M1 flame-retardant standards but also enhances thermal efficiency and sound absorption, resulting in a quieter, more effective system. All-Weather Durability: Built to withstand the harshest conditions, this split AC copper tubing complies with ASTM standards and remains flexible and reliable even at temperatures as low as -40°F. Whether in freezing winters or scorching summers, it delivers unmatched performance year-round. Versatile Compatibility: Ideal for a wide range of applications, this AC copper line set works seamlessly with various mini split air conditioners, HVAC refrigeration units, and heat pump systems. Its universal design and broad compatibility simplify installation while optimizing the efficiency of your existing mini split systems. Effortless Installation: Simply unfold, measure, cut, and solder this insulated tube set as extension pipes. The easy installation process allows for quick setup without compromising quality, making it a preferred choice for both professionals and DIY enthusiasts. Descriptions Color: White Material: Polyethylene Film, Foam, Cotton Length: 25 FT/50 FT OD of High-pressure Pipe: 1/4" OD of Low-pressure Pipe: 3/8" And 1/2" Net Weight: 5lbs/6lbs/10lbs/12lbs Tensile Strength: ≥40 Package Includes 2 x Copper Tubes 1 x Instruction