UPVC panels are a long-lasting and long-lasting alternative to composite doors. They are durable, efficient and fireproof. They are also cost-effective and easy to maintain. The most straightforward way to install a cat flap into a uPVC panel is to purchase an additional double-glazed sealed unit with a pre-cut hole https://cat-flap-in-upvc-door-pan78996.webbuzzfeed.com/31232559/how-much-does-a-cat-flap-cost