British Standard Locks

The following are key standards to know for different types of doors:

• BS3621: The most common standard for wooden doors, requiring a key for access from both sides. It resists common burglary techniques and has specific requirements, such as a minimum bolt projection of 20mm.
• PAS3621: This standard applies to multipoint locks found on PVCu or composite doors, offering the same level of security as BS3621.
• BS8621: Primarily used in flats and apartments, this standard allows for quick exit with a thumb turn inside, ensuring safety in emergencies.
• PAS8621: The multipoint lock version of BS8621, designed for PVCu and composite doors, with equivalent standards.
• BS10621: This standard is often found in commercial properties, requiring a key for outside access while preventing exit from inside.