https://opensourcebridge.scien....ce/wiki/Cat_Flaps_Fo
uPVC door panels are an alternative for composite doors. They are strong, durable and fireproof. They are also cost-effective and easy to maintain. Ordering a double-glazed sealed unit with already cut a hole for the cat flap is the most convenient method of installing a cat flap in a uPVC sheet. This is much more secure than trying to cut a hole in a 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 can reduce