The Yale High Security BS3621 Nightlatch Dark Grey, is used to securely lock the doors of the household and industries. The product is manufactured from steel making it versatile. The product is designed with 20mm anti-saw bolt that ensures good strength and is supplied with TS007 pin rim cylinder. The product is designed with automatic deadlocking system that secures locks the door as per the user’s need. The push button system of the lock is used to hold the latch and the keys secures it in place. The product requires no drilling as it can be fixed with the help of fixings, bolts and screws. The durable product is CE marked.