Custom 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 made to withstand extreme weather Made with Low-E glass to improve energy efficiency (smallest height ranges may be all metal, not glass)  Custom orders are made to your specifications and are non-returnable Approximately three weeks to build your custom panel pet door We'll need more information to complete your order. In your Order Confirmation email, there will be an Orange button with "Finish Your Order." Click on it to enter to answer questions to finish your order. Thank you! 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 easily 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 gla