https://jsfiddle.net/lyremallet5/0bo2kdjx/ https://articlescad.com/using-a-cat-flap-in-bifold-doors-565926.html It is best to hire an expert to install a cat-flap at your home. DIY projects usually result in poorly-fitted pet flaps that could allow in draughts or raise energy costs. SheffLOCK can fit the cat flap into all kinds of doors, including wood composite, uPVC, composite, glass doors as well as exterior walls. It takes around 2 hours on average to put in the new cat flap. The cost of the pet flap A pet flap allows your cat to move around whenever it wishes. If the flap isn't fitted correctly, it can allow heat to escape from your home and even let other animals in. Installing a motion sensor security light outside your home with the flap of your pet will make it more secure. You can find a wide variety of pet flaps with different sizes and features. They include a classic two-way door that allows your pet to move into and out as it wishes and magnetic pet flaps that opens when your pet comes close the pet flap, and a microchip cat flap that can read the chip that is on your pet's collar. These cat flaps are available at different prices, so shop around to find the most affordable price. You can ensure that your pet flap will last as long as possible by cleaning it frequently, and keeping it free of any fur or debris. In addition, you could include a door handle lock to prevent unwanted intrusions into your home through the flap. Install a motion sensor in the exterior security light. It is more effective than infrared detectors, and will alert you if there are any movements in the vicinity of the cat flap. A professional tradesperson can fit cat flaps to any door, including wood, uPVC, glass, and composite. If they wish, they can also install it in an external wall. Many homeowners try to save money by constructing the cat flap themselves. However, this could be an expensive mistake. If you make the incorrect cuts, your cat flap might not be able to fit prop