https://sciencewiki.science/wi....ki/UPVC_Door_Panel_W
If you're planning to install a pet flap on your uPVC door or glass panel, then you'll require the services of an expert cat flap fitter. They can also help with more advanced models such as microchip pet flaps. DIY attempts to install a pet flap can fail and can result in issues like draughts and low energy efficiency. A professional tradesperson can save you the headache and expense of tackling these issues. Cost There are many factors that affect the cost of cat flap installation. The cost is affected by the kind of flap