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-install, spring-loaded design ensures a secure fit without the need for permanent installation, making it an excellent choice for renters and vacation homes. Can't find your size? Order a custom width range to get a pet door panel tailor-made for your window. 

Crafted with a heavy extruded aluminum frame, the Thermo Sash 3e is available in white, dark bronze, and brushed aluminum, blending seamlessly with your existing window. 

The heart of the Thermo Sash 3e is the flexible polyolefin polymer flap, designed to remain functional in temperatures as low as -40°F. Lined with magnets along the edges, the flap offers superior sealing, remaining shut during heavy winds and extreme weather conditions. Additional magnets can be added to increase weather protection, or you can remove the magnets entirely to make the flap easier for timid cats to use. 

For added security and insulation, a locking cover and weather stripping are included with the Thermo Sash 3e. The product also comes with a 90-day return policy and a lifetime warranty, giving you peace of mind in your investment.

Please note that the Extra Large Flap 22" - 25" Width Panel is made with plexiglass, is custom-made-to-order, and is non-returnable

Features:

• Heavy extruded aluminum frame in white, dark bronze, and brushed aluminum
• Flexible polyolefin polymer flap, functional in temperatures down to -40°F
• Superior sealing with magnets lining flap edges
• Locking cover and weather stripping included for enhanced insulation
• Lifetime warranty and 90-day return policy
• Sizes to fit windows from 22" - 43" in width and at least a 1" thick track. Customized sizes available

Benefits:

• Sleek frame and color variety are complementary to many windows
• The flexible flap is easy for pets to use
• Polyolefin polymer flap is pet and environmentally friendly
• Accommodates both dogs and cats
• Multiple pets can use the door due to its taller and slimmer design
• Temporary/semi-permanent installation is perfect for renters and vacation homes
• Keep your pets inside or out with the locking cover
• Gives pets the ability to come and go when they please