https://telegra.ph/Cat-Flap-In....stallation-in-Glass-
uPVC door panels offer a long-term alternative to composite doors. They are durable, energy efficient, and fireproof. In addition, they are cost-effective and easy to maintain. Ordering a double-glazed sealed unit that has an opening already cut for the cat flap is the most convenient method of installing an animal flap inside a uPVC sheet. This is safer 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