The i-CE Locking Systems 5 Lever Deadlock is a security device designed to be used on inward or outward opening doors. It is suitable for bolt-through door furniture, providing an additional layer of security. The deadlock conforms to the British Standard BS3621, indicating a high level of theft resistance and quality. The 63mm size refers to the backset, which is the distance from the edge of the door to the center of the keyhole. This deadlock has a satin stainless steel finish and offers a 60-minute fire rating, making it a robust choice for security and safety. The product is also reversible, allowing for easy installation on various door orientations. It is insurance approved and secured by Design Approved, showcasing its reliability and trustworthiness in residential and commercial settings.