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uPVC panels are a durable and long-lasting alternative to composite doors. They are strong energy efficient, durable, and fireproof. They are also cost-effective and easy to maintain. Ordering a double-glazed sealed unit with a hole already made for the cat flap is the easiest method to install a cat flap in a uPVC sheet. This is safer than cutting a hole into an existing glass panel. UPVC doors are easy to m