The cat flap is simple and easy to install and the cats take this very quickly. The clicking sound when the bolt dissolves is in comparison to other chip-cat flaps surprisingly quiet. Also the draft behavior is surprisingly low, because I have already experienced other, where I got really cold feet in winter. The cat flap is built into our patio door in the area of our bed, so it's really good that it's not so much by pulling. It is also great, that cats with relatively broad shoulders and thereby come and the tunnel is not as long. Our cats weigh 5 and 3 kilos and come prima cope with the flap. Although I do not believe that a cat of 7 kilos fits thereby. I would basically like to see a larger passage. My hangover of 5 kilos is only 2 years and I do not know how much he is still growing ... The flap is working fine. I can so many previous speakers that the door was still broken from the inside through the cat flap fortunately not confirm My cats quickly give up when they realize it is no longer out. A big wish of mine is also a cat flap, which detects whether the cat a mouse / bird or the like brings and keeps closed the latch; o)
A stars-hood there is that the installation and operating instructions (without making directly from English into German, about the meaning of the words thoughts) in a terrible German was translated. Therefore, it caused a few misunderstandings.
Supplement in June 2013: now we have a dog who squeezed even up to a size of 35 cm and 12 kg by opening up the cat flap and the flap has not been broken or torn. For that I would love to give a half star more, you can not, unfortunately. PS: our cat so gets even by long loose O)