http://brewwiki.win/wiki/Post:....How_to_Choose_a_Cat_
uPVC is a popular option for home doors. They are durable and easy to maintain. They aren't always easy to place with a flap for cats. A replacement upvc door with the cat flap is often the best choice. It is simple to install and is less costly than a new door. Safety uPVC panels that have cat flaps allow your pet to enter or leave your home without opening the door. The door panels are available in a range of styles and can easily be made to fit any existing door frame. They are also energy efficient and can help to red