Mueller 61880500 Line Set is expertly crafted for superior performance in HVAC applications. Featuring a 3/8" liquid line and a 1-1/8" suction line, both with 3/8" insulation thickness, this 50-foot line set ensures efficient refrigerant flow and optimal thermal protection. Constructed from high-quality copper, it is designed to withstand the demands of residential and commercial HVAC systems, providing durability and reliability. The insulation offers excellent thermal resistance, minimizing energy loss and improving overall system efficiency.