This intuitively designed wall sleeve kit is compatible with most Packaged Terminal Air Conditioners. The thick base is made to protect the wall and the PTAC from any damage from the weight of the unit, so you can be worry-free and enjoy the cool air. The wall sleeve helps insulate the PTAC to not only protect the exterior, but to also safeguard the interior engineering of the air conditioner. This kit does more than just protect your PTAC, it also makes installation easy with less weight to bear when lifting the unit., Lot of 1