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https://articlescad.com/how-to....-install-a-upvc-door
You're tired of having stand up to open the door for your pet. A cat flap could be the answer. Pet-flap installers can put them in any type of door, regardless of whether it is uPVC, composite or composite. They can also install them into some types of walls. Security It is not uncommon to see cat flaps fitted to doors, but there are many who have them fitted into windows or double-glazed doors. Having one fitted into glass could be a good ch