Door lock Jania Z003 90/50 mm with key and lever (MP ZW 90K5 J)

Jania Z003 is a mortise door lock with a 90/50 mm backset supplied with a keyed cylinder and lever handle configuration. Designed for installation in standard interior and exterior wooden or metal doors, this lock provides secure door closing, an operable latch with lever handle, and the ability to lock and unlock with a key. The mechanism is suitable for typical residential and light commercial applications where a combination of lever operation and key security is required.

Advantages

The lock combines a reliable mortise mechanism with a keyed cylinder and lever handle, enabling convenient daily operation and secure locking when needed. Its 90/50 mm backset makes it compatible with common door preparations, and the design supports installation in both wooden and metal door leaves. The product offers straightforward mechanical function without electronic components, which reduces maintenance needs and ensures long-term usability under normal conditions.

Suitable for

• Residential entrance and interior doors where key locking and lever operation are needed
• Small offices and light commercial premises with standard door preparations
• Wooden or metal doors with a 90/50 mm backset
• Applications requiring a mortise lock with a keyed cylinder and lever handle

Key specifications

• Lock type: mortise lock with latch and keyed cylinder
• Backset: 90/50 mm
• Operation: lever handle for latch retraction, key-operated locking
• Compatibility: suitable for wooden and metal doors with standard preparation
• Use case: interior and exterior doors for residential and light commercial settings

How to use

Install the mortise body into a compatible door cutout per the door manufacturer’s recommendations and align the strike plate on the frame. Use the lever handle to operate the latch for normal opening and closing. Insert the key into the cylinder and turn to engage or disengage the deadlocking function as required. Regularly check alignment of the latch and strike plate to ensure smooth operation and re-tighten mounting screws if necessary.

Usage recommendations

For reliable performance, ensure the door edge and frame are prepared to match the 90/50 mm backset and that mounting screws are tightened to manufacturer torque values. Lubricate the cylinder and moving parts with a dry graphite or silicone-based lubricant periodically and avoid using wet oil products. Have the lock installed by a qualified fitter if unsure about door preparation or alignment to prevent premature wear and ensure correct security function.