Endura Flap Custom Thermo Sash 3e Pet Doors for Sash Windows

Insulating sash window insert with built-in pet door Suitable for windows 22" - 43" in width, with 1" thick track Features 3/16" clear safety glass which is 59% thicker than the standard for enhanced durability and increased energy efficiency Easy installation and semi-permanent, ideal for renters Locking cover included that loads from the top Video to explain how to measure sash window track width Extra Large Flap 22" - 25" Width Panel is made with plexiglass The Endura Flap Thermo Sash 3e Pet Door for Sash Windows provides your pets with the freedom to come and go while maintaining your home's insulation and energy efficiency. This sash window insert features a built-in pet door, combining the elegance of a sleek frame with the reliability of a weatherproof, insulating panel. The Endura Flap Thermo Sash 3e 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 1" thick track. The easy-to-instal