Patio Pacific 07PPC06 BW Thermo Sash IIIe Pet Door for 25in Sash Windows, 06 Small Flap, White

The Patio Pacific Thermo Sash IIIe Pet Door is the premium solution for adding a pet door to your sash style window. It is far more energy efficient than cheaper single pane pet doors for sash windows, and combines dual-pane, low "e" glass with the superior, award winning Endura Flap (see below). It is highly wind-resistant and includes a "draft stopper". The Thermo Sash IIIe pet door is constructed of beefy metal framing and has a sturdy locking flap cover. The spring loaded design ensures that this pet door can be installed and removed in seconds, no tools are required for installation. There is even a couple of built-in "anti-whoops" features that allow you to adjust your panel by 3/4" to make a perfect fit or even make corrections to your installation, just in case your measurements are slightly off.