https://informatic.wiki/wiki/R....eplacement_Upvc_Door
A cat flap that is window-mounted is a great method to let your cats have access to the garden without opening the door. It can be confusing to your pets initially, but they might be uneasy about using it. This article will provide some of the best ways to teach your cat how to use the flap. Easy to install Many cat owners aren't able give their pets access to the outside. Often a door is not an option (especially when you rent) and windows as a way to access the outside is preferred in smaller apartments and homes.