Looking for huge cat flap

[2018name]

My cats are big - we have bought a cat flap like this and although they can squeeze, and I do mean squeeze through, they are old cats and it is an effort. I want to make life as easy as possible for them and really need something a bit bigger - has anyone got or seen one bigger than this? Thanks very much.

like this www.amazon.co.uk/gp/product/B000793LFK/ref=oh_aui_detailpage_o08_s00?psc=1&tag=mumsnetforum-21&ie=UTF8

What about a dog flap?

Sureflap's pet door is bigger than the cat flap

https://www.amazon.co.uk/gp/aw/d/B009NH6NR0/ref=mpssa114?ie=UTF8&qid=1524865561&sr=8-4&keywords=pet+flap&dpPl=1&dpID=41CFl-QS%2BiL&ref=plSrch

Do take care with a large cat flap/dog flap, as they are burglar-sized. A friend found this out to their cost. The burglar was able to get into the conservatory via the dog flap, and then work unseen to break into the main house. They think the dog just watched, (a watch dog?!).