Cat doors are great but not perfect. Usually the flap doesn't seal that great and there is always cold air passing through. So I figured why not insulate the cat door a little so that cold air can't just rush inside the house…
Meet the cat door curtain which allows you to do exactly that. You can of course adjust it to whatever you need / size of your cat door. I put a rod into the bottom of the curtain which is bend to make the curtain fit nicely around the cat door and it avoids the kitties dragging the curtain inside the door blocking the flap. It is maybe silly but works great
The author hasn't provided the model origin yet.