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uPVC panels are a long-lasting and long-lasting alternative to composite doors. They are durable, effective and fireproof. Additionally, they are affordable and easy to maintain. The purchase of a double-glazed, sealed unit with an opening already cut for the cat flap is the simplest method to install the cat flap on a uPVC sheet. This is a lot safer than cutting a hole in an existing glass panel. UPVC Doors are easy to maintain Unlike traditional wooden doors, uPVC doors don't require frequent painting or sanding