Air Conditioners Keystone

With the reliable Keystone 26-inch wall sleeve, you can be sure your through-the-wall air conditioning unit is functioning properly to give you consistent cooling to keep you comfortable, even on the hottest days. The sleeve is conveniently compatible with all 26 inch wide air conditioners. Installed in pre-cast concrete or masonry walls up to 17.75 inches thick, the all metal construction of the sleeve bears the weight of the air conditioner and can withstand inclement weather, corrosion, and other elements. Simply fasten the sleeve to the wall securely and then install the unit as directed in the product manual. The sleeve not only insulates the air conditioner to keep it running efficiently,…