In principle, a cat flap can be installed in all doors made of wood, metal or plastic. Even glass doors and balcony doors can be used for your furry friend. Cat flaps for windows are also not a problem to install. However, before you buy a cat flap, you should make sure that the chosen model fits your door or window pane. There are special tunnel extensions for particularly thick walls, glass or door materials. For the cat flap, an exact fitting opening must be cut into the door or the glass panel; a task for a carpenter or glazier in whom you have confidence. When attached to the weather-exposed side of the house, the cat flap should be insulated against wind and moisture. As a tenant, you must ask your landlord for permission to attach a door flap. When installing the cat flap, make sure that the entry height for the cat is comfortable and not too low. At our online shop you will find a large selection of cat flaps & cat doors from manufacturers such as Staywell and Sure Flap. Learn more now!