The MRCOOL MLG450-G-01 LineGuard Gray Exterior Line Set Cover Kit is a protective covering system designed to conceal and safeguard refrigerant lines, wiring, and drain hoses used with ductless mini-split air conditioners and heat pump systems. It works by enclosing exposed line sets in a durable, weather-resistant channel, helping protect them from UV exposure, moisture, debris, and ... https://www.partshnc.com/mrcool-lineguard-gray-mini-split-lineguard-kit-mlg450-g-01