Endura Flap Cat Door for Horizontal Sliding Windows

Removable panel with built-in cat door fits into a horizontal sliding window track Durable, aluminum frame and pet door flaps made to withstand extreme weather Made with Low-E glass to improve energy efficiency  Quick and easy installation Need a different size? Check out this product's custom options The Endura Flap Cat Door for Horizontal Sliding Windows is made to fit into the existing track of your side-to-side sliding window. It installs in a matter of minutes with a spring-loaded design to safely secure into your sliding window track without any permanent alterations (perfect for renters). The removable panel comes with a C-clamp lock, draft stopper, and weather stripping. It features Low-E glass that is UV and infrared-resistant for maximum insulation value. The flexible flap is lined with adjustable magnets to resist heavy wind and extreme temperatures. The panels have a 3" spring-loaded height adjustment, so if you have a 48" track, for example, the panel you choose will ad