Build cat flap
Out of necessity, this idea is born.
A strong board that the shutter can be placed well on it and get a flap. Ours is a bit big, does not have to be.
Saw hole for the flap, fit in and you're done.
We fixed the board on the outside of the frame, we took the bolts, but everyone can take what they want.
PS: we have it in the bedroom, because it is best for us, because you do not need it so bright and with cold and warmth it works too.
Maybe it would be something for windows. Have fun with the imitation.
