The MRCOOL DIY25-1438C-O DIY 6K, 9K & 12K BTU Line Set with Pro Cable is a 25-foot refrigerant line set designed for compatible MRCOOL DIY ductless mini-split systems. It features 1/4-inch and 3/8-inch copper lines that connect the indoor air handler and outdoor condenser, supporting efficient refrigerant circulation during heating and cooling operation. The included Pro Cable enables... https://www.partshnc.com/mrcool-diy25-1438c-o-line-set