The MRCOOL NV50-3834 Universal Series 50 FT 3/8" x 3/4" Pre-Charged Quick Connect Line Set is a factory-prepared refrigerant piping assembly designed for compatible ductless HVAC systems. It provides a sealed pathway for refrigerant to circulate between the outdoor condenser and indoor air handler, supporting efficient heating and cooling. Its pre-charged quick-connect design simplifi... https://www.partshnc.com/mrcool-universal-series-pre-charged-quick-connect-line-set-nv50-3834