https://pattern-wiki.win/wiki/....Get_a_UPVC_Door_Pane
A upvc panel that has a flap for cats can help to minimize draughts in your home. By keeping your pets in and cold air out you will save money on heating bills. It is possible to install a cat flap into the upvc panels as well as double glazing glass sealed units however it is more difficult than with timber doors. This is due to the fact that upvc comes in different thicknesses. Benefits A cat flap installed on your door allows you to keep your pet inside or out of the house, while allowing other people in. helps