Very slim cat flap

[peachpearplum01]

We’re currently in the final stages of building a kitchen extension and foolishly didn’t think about where a cat flap would go. We don’t actually have a cat yet although have owned cats previously.
Our only option seems to be a very slim cat flap in the sliding door - has anyone got one they could recommend? It can only protrude by 7mm which is quite limiting..
Thanks

I've just had a Google of low profile cat flaps and there are a few, but they don't give measurements.

Any chance the builders could create a hole in the wall instead?

Thanks. We looked at the wall option but don’t have much wall space at the back and there are cables and pipes in the only bit we could have used. We have loads of wall at the side but it goes straight onto our neighbours boundary!
I think we might have to buy one and check...

You can get special ones for glass doors that are clear.