https://mcknight-stanley-2.mdw....rite.net/using-upvc-
https://anotepad.com/notes/jqsxii87
It's much easier than you think to install an animal flap inside a solid uPVC panel or a sealed double-glazed unit. If you don't have the proper tools or expertise, you'll need to employ a professional. Learn how to measure and mark the area in the uPVC panel for your cat flap. Also, learn how to make the flap weather and draft-proof. Safety A door made of upvc with a cat flap is an excellent option to keep your pet safe while still allowing them freedom of moveme