https://chessdatabase.science/....wiki/Cat_Flap_Instal
A upvc-clad panel with a cat flap can reduce the amount of draughts that your home experiences. You can save money by keeping your pet inside and letting cold air out. It is possible to fit a cat flap into the upvc panels as well as double glazing glass sealed units however it can be more difficult than doors made of wood. This is due to the fact that upvc comes in a variety of thicknesses. Benefits A cat flap installed on your door allows you to keep your pet inside or outside the house, while still allowing other people in