UPVC door panels offer a long-term alternative to composite doors. They are strong, durable and resistant to fire. Additionally, they are affordable and easy to maintain. The easiest way to fit an animal flap on a uPVC panel is to buy an extra double-glazed sealed unit with a pre-cut hole https://www.repairmywindowsanddoors.co.uk/wythenshawe-cat-flap-installer-near-me/