dormakaba HZ 43-FR Automatic Bolt Right-Handed 22mm Plate Fire Door Certified

Product Overview

The dormakaba HZ 43-FR automatic bolt, right-handed variant with a 22 mm plate, is used for locking the inactive leaf of double-leaf doors. Designed for professional installation in fire-rated and smoke-control doors, its hidden mechanism is integrated within the door leaf and operates automatically when the active leaf is closed. Approved for use in fire and smoke protection assemblies, it is suitable for commercial and institutional environments that require certified passive locking solutions.

The key feature distinguishing the HZ 43-FR is its detachable bolt with a ball-ended pin, which greatly simplifies installation, especially in scenarios where access inside the door leaf is limited. This eliminates common fitting complications and minimizes labor time for installers working on OEM or retrofit fire door projects. It is particularly suited for contractors and facility managers specifying certified hardware in bulk for multi-door fire safety upgrades.

Key Features

• Automatic actuation ? bolt deploys on closing active leaf, no manual activation required


• Detachable ball-ended bolt pin ? facilitates quick installation and maintenance


• Corner leaf does not require cutting or milling ? reduces door preparation complexity


• Spring-equipped profiled bolt latch ? ensures secure and consistent engagement


• Adjustable latch length ? accommodates varying door frame dimensions


• Regulatable strike plate with mounting plate ? allows fine adjustment for optimal leaf pressure


• Hidden mechanism ? integrated in leaf for tamper resistance and aesthetic compliance

Technical Specifications

• Mounting Position: Right-handed inactive leaf, upper edge


• Plate Thickness: 22 mm


• Detachable Pin: Ball-ended


• Bolt Latch: Profiled with spring


• Strike Plate: Adjustable with mounting plate


• Mechanism: Hidden within door leaf


• Certification: Approved for fire-rated and smoke-control doors

Applications

Used for locking the inactive leaf in double-leaf doors within commercial, institutional, and multipurpose buildings. Suitable for fire-rated and smoke-control doors, facilitating compliance with safety standards in office complexes, hospitals, hotels, and public facilities. Recommended for OEM manufacturing, bulk renovations, and facility upgrade projects requiring certified passive locking hardware.

Packaging & Shipping

Standard export packaging. Each unit includes the automatic bolt body, detachable pin, adjustable strike plate with mounting plate, installation accessories, and mounting instructions.