Cat Window Insert for horizontal sliding windows. 35" and 57" tall windows. They all come with our standard neoprene weighted flap. The 35" comes with one solid white coroplast panel and one neoprene flap. The 57" comes with two solid white coroplast panels and one neoprene flap. Both sizes come with weather stripping. It is held in with a strategically placed velcro hook in the upper track of the window frame. Then just use a security bar or window lock for security.
(We are also offering as an upgrade a clear weighted flap for an additional $15 the upgraded flap comes with a cover for the opening)