Looking for serious door security? This Yale M562 deadlock means business! Kitemarked to BS3621:2007 standards, it's actually recommended by insurance companies and police for good reason. The 76mm case size with 57mm backset fits most standard doors perfectly. The chrome forend measures 144mm long by 25mm wide, giving it a substantial, professional look. What's really important is the deadbolt operation - it can only be locked or unlocked by key from either side, providing that extra layer of security compared to simpler locks. The construction is solid and built to withstand attempted forced entry. Whether you're securing your home, office, or commercial property, this Yale deadlock delivers the peace of mind you need. The quality craftsmanship Yale is known for really shows in the smooth operation and durable materials. Installation is straightforward for anyone with basic DIY skills, though you might want a professional for perfect alignment. If security is your priority, this high-quality deadlock is definitely worth the investment.