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Integrating a cat flap in your bifold doors can provide many benefits to you and your feline companion. It also helps to prevent extreme cold or heat from entering your home. The first step is to measure your pet to determine the size of the flap you will need. This will allow you to make a hole that is appropriate to fit the cat flap. Outdoor Access Even those with basic DIY skills can install a cat flap to an outside backdoor. This will save you the expense and hassle of calling a carpenter, joiner or handyman to do the job for you. Th