Hidden Door Lock with Key: This lock is unlocked with a key and features a large, ergonomic handle for quick and easy locking from the inside. Its one-key system allows you to open multiple locks with a single key, simplifying access control. Combining comfort and practicality, this lock is ideal for sliding doors, folding doors, or hidden doors. Superior Quality: Made from high-quality zinc alloy, this robust hidden door lock is weather-resistant and rust-proof. Its scratch-resistant surface remains pristine, even in homes with pets. Additionally, the lock cylinder operates smoothly and without sticking. After installation, its almost silent operation allows you to enjoy peace and quiet.

Modern Design: This round hidden door lock features a satin brass finish, giving it an elegant and sophisticated look, perfect for modern-style doors. Its recessed design prevents it from rubbing against the door frame, maximizing interior space and enhancing the minimalist aesthetic. This lock combines style and functionality, making it the ideal choice for modernizing your doors. Compatible Sizes: This hidden lock is suitable for left or right-opening doors. It is compatible with standard doors 35 to 68 mm (1-3/8 to 2-11/64 inches) thick and has 54 mm (2-1/8 inches) recessed mounting holes, 25 mm (1 inch) side mounting holes, and a 60 mm (2-3/8 inches) backset. Refer to the dimension guide for proper installation and alignment. Easy Installation: All necessary components are included. Installation is simple and requires only a screwdriver. Each package contains detailed installation instructions; please read them carefully before installation.