Ductless Mini-Split Wall Sleeve

On a single zone ductless mini-split. What size should the wall sleeve be for the line set? I’ve read online with some saying 3″ and some even say 4″ to… On a single zone ductless mini-split. What size should the wall sleeve be for the line set? I’ve read online with some saying 3″ and some even say 4″ to…Read MoreGreenBuildingAdvisor