Endura Flap Thermo Sash 3e Pet Doors for Sash Windows

Insulating sash window insert: Endura Flap Thermo Sash 3e Pet Door fits windows 22"-43" wide and 1" thick track Easy, semi-permanent installation: Spring-loaded design suitable for renters and vacation homes Flexible polyolefin polymer flap: Remains functional in temperatures down to -40°F with superior sealing Locking cover included: Enhances insulation and security, while providing pet access control Extra Large Flap 22" - 25" Width Panel is made with plexiglass The Endura Flap Thermo Sash 3e Pet Door for Sash Windows combines elegance, functionality, and energy efficiency to provide your pets with the freedom to come and go as they please. This insulating sash window insert is designed to fit snugly into the track of most windows, with sizes available for windows ranging from 22" to 43" in width and at least a 1" thick track. The spring-loaded design ensures a secure fit without the need for permanent installation, making it an excellent choice for renters and vacation hom