UPVC panels are a durable and long-lasting alternative to composite doors. They are durable, effective and resistant to fire. They are also affordable and easy-to-maintain. The most straightforward way to install a cat flap into a uPVC panel is to order an additional double-glazed sealed unit with a pre-cut hole https://www.repairmywindowsanddoors.co.uk/solihull-cat-flap-installer-near-me/