MRCOOL MC25-1412 is a 25-foot flared refrigerant line set designed for 12,000 and 18,000 BTU mini-split systems. It includes 1/4-inch and 1/2-inch copper lines that connect the indoor evaporator unit to the outdoor condenser, allowing refrigerant to circulate between the two components for efficient heating and cooling. Designed for compatible MRCOOL ductless mini-split equipment, thi... https://www.partshnc.com/mrcool-25ft-1-4-x-1-2-flared-line-set-mc25-1412