https://theflatearth.win/wiki/Post:How_to_Install_a_Cat_Flap It might seem daunting to install the flap for your cat however, with the proper instructions it's not that hard. Determine how high you would like the cat flap (normally it's at belly height). Then, mark this area on the door and use the template as a guide to drill. If you have a kitten who is still a newborn and you want to keep the door open, gently prop it slightly open and encourage it to go through. Reward the kitten each time it passes. Take a measurement of the door A cat flap is an excellent method to let your pet move in and out of your house as it wants. This can help keep your cat healthy by making sure that it is exercising as well as being able to get back inside if stuck outside in the rainy weather, especially in winter. This will reduce the amount of time you allow your cat in or out, and keep your home safer by notifying you when it's gone. However, it is important that the flap on your cat is correctly fitted to prevent your pet from being able to escape through it or be pushed through by any other animals (e.g. dogs). It is important to measure the height of your pet's belly as well as the entrance to your home to ensure that the flap is at the right height. You can adjust the height of your flap if your cat is smaller or taller than the average. Next, use a spirit-level to mark the center of the door. This is where you will install the flap. With the markings as a reference, use an jigsaw to cut the form of the flap within the door. Once you've cut the space, sand down the edges of the door to smooth the surfaces. Then drill any fixing holes that are needed. The process of fitting a cat flap isn't as difficult as you may think and it should not take more than two hours to finish the entire job from start to completion. The process is slightly more difficult if you have to install it in the case of a uPVC door or a composite one. This is because these doors come in a variety of thickne