UPVC door panels are an alternative for composite doors. They are durable energy efficient and fireproof. They are also affordable and easy-to-maintain. Ordering a double-glazed sealed unit that has an opening already cut for the cat flap is the simplest method of installing a cat flap in a uPVC sheet. https://catflapfittingnearme53530.buyoutblog.com/30751511/how-much-does-a-cat-flap-cost