A mortise lock is a high-security locking mechanism installed into a pocket cut into the door, providing a more robust and secure fit compared to standard locks. This design enhances durability and makes it difficult for unauthorized access. Mortise locks often include a deadbolt for added security, making them suitable for high-traffic areas. One of their key advantages is the ease of key changes; the cylinder can be replaced without removing the entire lock, allowing for quick rekeying when needed. Available in various styles and finishes, mortise locks combine functionality with aesthetic appeal for both residential and commercial applications.