The MRCOOL NV15-3834 3/8" x 3/4" No-Vac Pre-Charged Line Set is a factory-prepared refrigerant piping assembly designed for compatible HVAC systems. It provides a sealed pathway for refrigerant to circulate between the outdoor condenser and indoor air handler, supporting efficient heating and cooling. Pre-charged and designed for no-vac installation, it helps simplify system setup by ... https://www.partshnc.com/mrcool-15-ft-pre-charged-line-set-nv15-3834