The MRCOOL MC25-1438 9K & 12K BTU Flared Line Set Kit is a refrigerant connection assembly designed for compatible MRCOOL ductless mini-split air conditioners and heat pumps. It connects the indoor air handler to the outdoor condenser, allowing refrigerant to circulate between the units for efficient heating and cooling. The flared connections provide secure refrigerant joints when pr... https://www.partshnc.com/mrcool-25ft-1-4-x-3-8-flared-line-set-kit-mc25-1438