The MRCOOL MC16-1412 is a 16-foot mini split line set designed for 12,000 to 18,000 BTU ductless HVAC systems. It features 1/4-inch and 1/2-inch copper tubing that connects the indoor air handler to the outdoor condenser, allowing refrigerant to circulate efficiently for heating and cooling. Suitable for compatible MRCOOL mini split equipment, this line set supports reliable system pe... https://www.partshnc.com/mrcool-mini-split-line-set-mc16-1412