Fire door locks for timber and steel doors
Our fire door locks for timber and steel doors meet the highest requirements for fire protection, functionality, and security – both in private residential construction and in public and commercial buildings. Thanks to their standardized dimensions according to DIN 18251 and their tested suitability for fire protection closures in accordance with DIN EN 12209, they are suitable for use in fire doors.
With precise mechanics, low-maintenance design, and a wide range of variants – such as the Series 23 or 1206 – BKS fire door locks offer a reliable solution for heavily used fire doors. The locks can be combined with standard profile cylinders and fittings – a freewheel cylinder is not required.
Optionally available with silent latch, monitoring contacts, or panic function, they also meet the requirements of EN 179 and EN 1125 – ideal for doors in escape and rescue routes or publicly accessible areas.
Features
The compact design allows installation in single- and double-leaf fire door systems made of timber and steel
Backset dimensions from 25 mm offer high flexibility in the selection of door profiles and fire protection requirements
The reversible latch allows use for both DIN left and DIN right – ideal for flexible planning and installation
- Fire door locks according to DIN 18251 and DIN EN 12209 are ideal for certified fire doors
Various versions enable additional functions such as strike plate protection latch, top locking, or panic function according to EN 179 / EN 1125
- The locks are compatible with standard profile cylinders and fittings – a freewheel cylinder is not required
- Optionally, a silent latch is available for quiet closing – ideal for sensitive areas with fire protection requirements
The locks are low-maintenance, durable, and designed for reliable continuous use on high-traffic fire-resistant doors
Fire door locks: The right choice – not only in terms of security
Fire door locks for timber and steel doors combine durable locking technology with high adaptability to different door systems in the field of fire protection. Whether in administrative buildings, public institutions, or residential construction – thanks to certified security according to DIN 18251 and DIN EN 12209 as well as a variety of versions with panic function or silent latch, fire door locks can be reliably and in compliance with standards integrated into modern fire protection and security concepts.
Reliability
The reliable mechanics ensure consistently safe operation even under heavy use. Ideal for use in tested fire doors in commercial and residential settings.
Versatility
Whether panic function, emergency exit approval, or quiet door closing – fire door locks for timber and steel doors can be flexibly adapted to door profiles, standards, and application requirements.
Security
Certified versions offer increased protection against fire spread and burglary. They meet the requirements of DIN 18251, EN 179, and EN 1125 for escape and rescue routes.
Technical data & standards
| Products | Type of lock | Usable in | Panic function | Secured latch hold | Type | Note | |||
|---|---|---|---|---|---|---|---|---|---|
| 1-leaf | 2-leaf | ||||||||
| Mortise locks Series 23 (manual locking) |
Fire door lock |
x | - | x | - | Optional | B-2338 | Strike plate protection latch optional |
|
| Fire door lock (for higher door handles) |
x | - | - | - | Optional | B-2368 | |||
Standards and safety requirements
Fire door locks for timber and steel doors meet the highest safety requirements in accordance with DIN EN 12209 and DIN 18251. Versions with panic function also comply with the European standards DIN EN 179 (emergency exits) and DIN EN 1125 (panic doors). VdS-certified versions are approved for burglar-resistant doors according to DIN EN 1627–1630. In addition, numerous models have tested fire and smoke protection suitability as well as CE marking for use in the European market.
suitability for fire protection
Approved for use on fire and smoke protection doors
mechanically operated locks and strike plates
EN 12209 is a European standard that deals with mechanical locks and striking plates for doors. This standard defines the requirements for security, functionality, and durability of mechanical locks. It includes test procedures for evaluating the performance of these products in various categories such as durability, corrosion resistance, and resistance to tampering.
VDS
Profile cylinders with this marking are available in VdS version.
RC
The EN 1627 standard is a European standard that defines requirements and classifications for burglar-resistant components such as doors, windows, curtain walls, grilles, and roller shutters. This standard is part of a series of standards, which also includes EN 1628, EN 1629, and EN 1630, covering various aspects of testing these products for their resistance to burglary.Resistance classes (RC = Resistance Class) are a central element of this standard and indicate how well a component withstands a burglary attempt. There are several resistance classes, from RC 1 to RC 6, with each higher class offering better protection. [doc2]
