Cat flap help!

[Meandkids]

Hi, we have had new doors fitted and the fitter cut the wrong size hole.. at 200mm for the flap. Our previous one doesn’t fit 🙈
I am now being told I have to wait a week for a new pane of glass and they will board up the hole.

Does anyone know if I can get a flap that would fit a 200mm hole? I have looked online but not found anything.
Don’t want her to be in all day, or out as we have some fighty cats locally...

Thanks all!

As far as I am aware there are only two sizes of flap - standard and large. I've no idea what the measurements are, but you can't get flaps in lots of varying sizes unfortunately (presumably to make it easier to change flaps). It's only a week. She'll be fine inside.