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Upvc is a very popular choice for home doors. They are durable and simple to maintain. They aren't always easy to place with an enclosure for cats. A replacement upvc panel with an opening flap is usually the best option. It is easier to install and less expensive than replacing the door. Safety uPVC panels with cat flaps allow your pet to move into or out of your home without opening the door. These door panels are available in a variety of styles and can be customized to fit into any door frame. They are also energy-e