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Installing a cat flap in your home is an excellent option for any pet owner. If your cat is old and requires extra security, or you have new kittens that require a thorough screening, there are plenty of options there for you. It can be intimidating for non-professionals to install the cat flap, but with the proper instructions, it's simple. Preparation, planning and precision are the key to success. Select the Right Door, or Windows There's a wide selection of cat flaps that are available that come with locks