rst922 years ago000I have a large British Longhair male cat. Does anyone have experience with the flap who also has large cats?Show in original language (German)janikfin2 years ago000 Helpful answerI have a main coon cat that gets through without problemsShow in original language (German)Commentjames.eudes2 years ago000The flap is square and quite large. Just make a cardboard box with a 14.5cmx14.5cm hole. If your cat fits through it easily, this cat flap should be right for you.Show in original language (German)Comment