https://ai-db.science/wiki/How...._to_Install_a_UPVC_D
Cat flaps give you the benefit of letting your pet move around at their own pace, without having to open the door or window for them. They come in a variety materials and can be incorporated into windows, doors and walls. A professional tradesman can install a cat flap on any type of door, including wood, composite and uPVC. Installation Costs The cost of installing a cat flap can vary greatly depending on the type, size, and complexity of the project. The wall or door material can also affect the labour cost. For ex