MRCOOL MC16-3858 24K BTU Mini Split Flared Line Set Kit is a refrigerant connection kit designed to link compatible indoor and outdoor mini-split units. It works by providing a secure, leak-resistant pathway for refrigerant to circulate between system components, ensuring efficient heat transfer for cooling and heating operation. Designed for use with compatible MRCOOL 24K BTU ductles... https://www.partshnc.com/mrcool-mc16-3858