Cat flap

[ForTheLoveOfDoughnuts]

I need some advise on best cat flap to go through on an exterior wall? Any recommendations from those who have this?
I've only had one in a glass door previously.
TIA

SureFlap microchip cat flap has been great for us - it’s adjustable for walls/doors and the handyman had no trouble putting it in, took him half an hour and then sealed round the edges with rubber sealant. £50 on Amazon.

It was ridiculously easy to set it for our cats microchip, I mean you literally press the on button and then get your cat to go through the flap and that’s it, so no other neighbourhood cats get in or out.

Oh should have added you may need the tunnel extenders which ate £5 each - see the comments on Amazon from people who used 5 or 6 of them to go through really thick stone walls, there are some good tips for installation there.

Thanks, I'll take a look at that one.

I'm shocked at how expensive the extension pieces are!