Our high quality install kits contain a few last minute items that help finish out the fine points of your new HVAC installation. Our kits come with a wall collar and thrust collar to provide that nice polished and professional look on the indoor side of the copper tubing opening, a good suply of Neoprene(tm) putty to completely seal up the gaps in the opening, and two rolls of vinyl tape to wrap the copper tubing in, providing a clean, sealed look. A low cost addition to any system purchase, our install kits are the perfect addon to make everything look nice and tidy and add that professional look.