https://botdb.win/wiki/Using_u....PVC_Cat_Flap_Door_Pa
Cat flaps are a great option to let your pet move around at their own pace. You can opt for a lockable flap to keep other animals and cats from entering your home. Installing a cat flap on a bifolding door is possible as long as the door frame is made of toughened glass. The frame should not be damaged or rotten. It's the same as installing one on an old wooden door or uPVC. Easy to install The addition of a cat flap to your bifold doors will allow your pet to go inside and out of the home freely, without having to open and close t