The inside of the door is made of steel and hardwood frame, which makes the door strong and sturdy. The outside is usually high-quality uPVC or a hardened weatherproof woodgrain effect, and any glass panels are toughened and built into the door so ensure that your composite door is a safe and solid structure. The multipoint locking system using a 6 pin cylinder, prevents intruders from gaining access by picking or drilling the lock.