https://botdb.win/wiki/Upvc_Do....or_Panels_With_Cat_F
uPVC panels are a long-lasting and long-lasting substitute for composite doors. They are durable, effective and fireproof. Additionally, they are inexpensive and easy to maintain. The purchase of a double-glazed, sealed unit with an opening already cut for the cat flap is the most convenient way to install the cat flap on a uPVC sheet. This is much safer than cutting holes 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 energ