https://wizdomz.wiki/wiki/Cat_....Flap_Installation_In
uPVC door panels provide a long-term solution to composite doors. They are strong, energy efficient, and fireproof. Additionally, they are affordable and easy to maintain. The easiest way to fit an animal flap on a uPVC panel is to purchase an extra double-glazed sealed unit with a pre-cut hole for the flap. This is more secure than cutting a hole through an existing glass panel. UPVC Doors are easy to maintain Unlike traditional wooden doors, uPVC doors don't require frequent painting or sanding. They also use less energy and