https://king-wifi.win/wiki/Ins....talling_a_upvc_Door_
Cat flaps are an excellent way to allow your pet to move around at their own pace. You can also select a locking cat flap to keep other cats and animals from gaining access to your home. Installing a cat flap onto a bifolding doors is possible, provided the panel is made of toughened glass. The frame should not be damaged or rotten. The procedure is similar to installing a cat flap on the door made of wood or uPVC. Easy to install The addition of a cat flap to your bifold doors will allow your pet to go in and out of your