The MRCOOL MC16-1438 Mini Split Line Set Flared Connection Kit is a 16-foot refrigerant line set designed for 9K and 12K BTU mini split air conditioning and heat pump systems. Featuring 1/4-inch and 3/8-inch copper lines with flared connections, it provides a secure pathway for refrigerant flow between the indoor and outdoor units. This kit supports efficient heat transfer and reliabl... https://www.partshnc.com/mrcool-mc16-1438