https://myers-stryhn.technetbl....oggers.de/adding-a-c
uPVC panels are a durable and long-lasting alternative to composite doors. They are strong, durable and resistant to fire. They are also inexpensive and easy to maintain. Ordering a double-glazed sealed unit that has already cut a hole for the cat flap is the easiest method of installing the cat flap on a uPVC sheet. This is a lot safer than trying to cut the hole in an existing glass panel. UPVC doors are easy to maintain Unlike traditional wooden doors, uPVC doors don't require frequent painting