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A upvc panel with an animal flap can help minimize draughts in your home. By keeping your pets in and keeping cold air out, you will save money on heating bills. It is possible to fit an opening for a cat flap in both upvc panels and double glazing glass sealed units however it can be more difficult than timber doors. This is because upvc is available in a variety of thicknesses. Benefits A cat flap attached to your door is a great method to keep your pet safe or out of the home while still allowing people