https://output.jsbin.com/qimokedapi/
It's simpler than you think to install the cat flap on the solid uPVC panel or sealed double glazed unit. If you don't possess the right tools or no experience, you will need the help of a professional. Learn how to measure, mark and cut the area in the uPVC panel for your cat flap. Also, learn how to make the flap weatherproof and draft-proof. Safety A upvc panel that has a cat flap is a great way to ensure your pet's security while still allowing the pet to move around freely. These panels are made from recycled materials and require minimal maint