Double glazing can be equipped with dog and cat flaps to let your pet go and go at their own pace. They are also great to keep an eye on your pet when you are away. It is possible to install a cat flap inside an existing uPVC panel or https://cat-flap-installer-near-m84096.blogunteer.com/30044105/installing-a-cat-flap-in-a-upvc-door-cost