BONAITI B-TWIN 85/50 Magnetic Lock Black EN 12209 Universal for Interior Doors

Product Overview

The BONAITI B-TWIN 85/50 magnetic lock is designed for use in non-rebated interior doors, offering smooth and quiet operation through advanced Italian magnetic technology. Certified to EN 12209:2005 with mechanical durability class 3, it is suitable for high-traffic residential and light commercial environments. Its construction combines steel and glass-fiber reinforced plastic for enhanced longevity and maintenance-free performance.

This model is distinguished by its compatibility with both left and right doors due to its universal design, eliminating procurement risks associated with reversible lock requirements. Identical dimensions to previous B-TWO locks allow fast replacement without extra drilling, addressing retrofit project needs. It is particularly recommended for interior contractors and fit-out suppliers managing modern door installations where discreet aesthetics and certified durability are priorities.

Key Features

• Universal design ? fits both left- and right-handed doors, simplifying inventory and installation


• EN 12209:2005 certified ? assures compliance with durability and safety standards


• Enhanced magnets ? patented system enables lighter, quieter action and long service life


• Maintenance free ? no lubrication needed, reduces ongoing facility management costs


• Steel and glass-fiber reinforced plastic ? high durability against wear and mechanical stress


• Concealed hardware ? lock and strike are nearly invisible with door open, supports minimalist interiors


• Replacement-ready ? same dimensions as B-TWO locks allow for quick upgrades without additional drilling

Technical Specifications

• Lock Type: Magnetic


• Certifcation: EN 12209:2005 (3 H 4 0 0 A 2 H D 1 0)


• Mechanical Durability: Class 3


• Backset: 50 mm


• Lock Body Length: 85 mm


• Materials: Steel, glass-fiber reinforced plastic


• Handing: Universal (left/right)


• Finish: Black (other finishes available)


• Versions: Cylinder, key, WC lock

Applications

Suitable for interior non-rebated doors in residential apartments, hotels, office fit-outs, and retail spaces. Compatible with modern design projects where concealed hardware and silent operation are essential. Can be used for both new installations and upgrades, especially benefitting retrofit scenarios where previous B-TWO locks are in place. Appropriate for bulk procurement and specification-driven construction where EN 12209 certification is required.

Packaging & Shipping

Standard export packaging. Each unit includes the lock body, mounting hardware, and installation manual. Strike plates must be purchased separately for retrofit installations.