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A upvc-clad panel with a flap for cats can help to reduce draughts within your home. By keeping your pets warm and keeping cold air out, you can save money on heating bills. While it is possible to install a cat flap into both upvc and double glazing sealed units, it can be more challenging than with doors made of timber. This is because upvc is available in various thicknesses. Benefits Having a cat flap fitted to your door is a great