Question about SureFlap Connect

At least 212cm for the cat flap and at least 300cm for the pet flap. However, the round glass installation adapter is required for installation in the glass pane.

Comparison of the different flaps: https://ipet.ch/media...

Do you mean the access opening?
small flap 142 x 120
large flap 178 x 170
I have chosen the small flap for a normal house cat. So that the chip can be read easily, don't choose too large a flap if it's not necessary. It works excellently, I haven't had any other animals in the house since.

Tip top danke.