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If you're looking for a method to let your pet inside and out without worrying about them leaving unwanted "gifts" in the house you should consider purchasing an upvc door panel that has a cat flaps. This is cheaper than replacing the whole door and is simpler to install. While it is possible to put a cat flap into your own uPVC door, you need to be aware that this is a tricky job that could lead to costly errors. Easy to install It is important to allow your pet or cat inside and out of your house. This will help you