Window Extension (For Medium+Whippet)

Window Extension for MEDIUM and WHIPPET Size pet door insert

Moved house and need a pet door insert extender?

Window extensions are super easy to install. 

How to attach a window extension for heights 2.21m-2.30m and 2.31-2.40m tall:
https://youtu.be/qvfeiNUY4Mo?si=CLRYJdDiuXIgL-Pm

How to attach window extension for height 2.41m and above: 
https://youtu.be/Bs7lVla6KzA?si=PcsraoBpEEgx5C1g