Dragon Sash Window Pet Door Single Flap Custom Pet Doors If you've considered a patio

If you've considered a patio dog door inserts

It includes the plastic frame

If you purchased a Thermo Panel or Thermo Sash you might be able to salvage the situation by using the "anti-whoops" feature:

black (bronze)

you will need to purchase two dog door replacement flaps (unless you only want to change one of them)

Dragon Sash Window Pet Door Single Flap Custom Pet Doors If you've considered a patioCost effective panel insert with built in pet door for sash windows Adjustable width ranges to fit windows 22 43 in width Easy installation for most windows Two piece flap for improved sealing Sturdy aluminum framing comes in black or white The Dragon pet door for sliding sash windows allows you to enjoy quick installation and excellent weather resistance at a low cost. With seven different width adjustment ranges, this Dragon window panel installs in