A:Answer The Window Installation Kit for the LG 400.4 Sq. Ft. 12,000 BTU Portable Air Conditioner, Model # LP1217GSR consists of an 18" Window Vent panel, 2 x 17" extension panels, a 9" extension panel, an adhesive a non-adhesive foam strips, and the necessary screws and a security bracket. The supplied flexible exhaust venting hose attaches to the 18" window vent panel. The window installation kit is designed for installation in most vertical-sliding windows 18" to 50" wide or casement-style windows 18" to 50" high...^IFV