Line set covers are decorative PVC or plastic channels that hide and protect the refrigerant lines on the exterior wall. You can find various colors and sizes in our Line Set Covers collection. They prevent UV damage to the insulation and keep the installation looking professional. Most people buy these as part of their Installation Kits package. They can be painted to match the color of your home's siding. It’s the finishing touch that makes a DIY project look like a pro job.