This MRCOOL DIY 25-foot pre-charged line setGo to product viewer dialog for this item. features a 1/4-inch liquid line and a 3/8-inch suction line designed for seamless integration with 6K, 9K, and 12K BTU mini-split indoor air handlers. Factory sealed and pre-charged with eco-friendly R-454B refrigerant, it eliminates the need for vacuum pumps, specialized tools, or certified HVAC technician assistance. Equipped with patented No-Vac Quick Connect fittings for a secure, leak-proof installation, the durable copper tubing is encased in a white, UV-resistant protective insulation sleeve that safeguards against extreme weather conditions, sun damage, and wildlife erosion

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