Ozone Night Latch with High-strength Deadbolt | Door Thickness: 40mmHigh strength Deadbolt with 3 & 6 Strokes: This special deadbolt offers increased strength and durability by moving either 3 or 6 times in response to the key's rotation. It has a robust door locking mechanism to provide exceptional security. Functioning as a basic yet reliable door lock, a night latch is usually installed as an extra security feature. Simple to use, it ensures doors remain secure, preventing unauthorized access at night or when