Robust and long-lasting


Latch & deadbolt mortise lock
Fallen-/Riegel-Einsteckschloss multisafe 803

Perfect for interior doors 

The multisafe 803 latch & deadbolt mortise lock is a robust lock that you can rely on for years to come. It is already available as a flat faceplate version from 16 mm and other faceplate versions are available for delivery making it perfect for use in uPVC, aluminium or timber interior doors without a problem.



The multisafe 803 is part of the FUHR system solutions, which open up many new possibilities for you in terms of application.

Flexible in use

This lock can easily be turned into a swing door lock thanks to the use of a roller latch. 

Efficient in application

Suitability for both right and left doors reduces storage costs. 

Security you can always rely on

Robust and long-lasting – tested over at least 200,000 operations. 

General product details  



The door is locked by turning the key.


From outside: 
Opened with the cylinder key.

From inside:  
Unlocked with the cylinder key. The latch is retracted using the key or by operating the lever handle. 


Technical data

  • Faceplate version
    • Flat 16, 20 and 24 mm
    • U24x6 mm and U24x6.7 mm
  • Surface
    Stainless steel
  • Backset
    25, 30, 35, 40, 45, 50, 55, 65 mm

  • Centre
    92 mm
  • Follower
    8 mm
  • Cylinder
    Designed for profile cylinders or round cylinders 
  • Door opening direction
    Can be used on right or left
Frame components

We also offer a wide range of profile and material-specific strike plates for all door requirements to go with our locking systems. There is also an extensive selection of accessories.

To our frame components

FUHR Rahmenteile Holz/Alu
Certificates and tests

Our in-house tests and regular checks by reputable independent test institutes both in Germany and abroad ensure that we keep to our high quality standards.

  • Certified according to DIN 18251-1

Versions – tailored to the system solutions 

Aluminium/steel doors

  • Faceplate version
    • Flat 24 x 317 mm
    • U 24x6 x 337 mm
    • U 24x6.7 x 337 mm
  • Surface
    Stainless steel ground finish
  • Backset
    30, 35, 40, 45, 55 mm 

  • Centre
    92 mm 
  • Follower
    8 mm 
  • Screw hole
    Countersink for standard window installation screw 4.2 mm or FUHR special self-tapping screw M5 with small countersunk head 
uPVC doors

  • Faceplate version
    • Flat 16 x 317 mm
    • Flat 20 x 317 mm
    • Flat 24 x 317 mm
    • U 24x6 x 337 mm
  • Surface

  • Backset
    35, 40, 45, 50, 55 mm  
  • Centre
    92 mm 
  • Follower
    8 mm
Bauteil in der Fertigung. Verriegelungs-Programme von FUHR, speziell abgestimmt auf den jeweiligen Türwerkstoff: Schlösser und profilspezifische Schließleisten, Schließteile, Standflügelbeschläge sowie umfangreiches Zubehör.


for every requirement


Prospekt FUHR Systemlösung für Aluminium- und Stahltürende – pdf4.51 MbDownload
Prospekt FUHR Programm-Überblickde – pdf16.62 MbDownload
Zertifikat DIN 18251-1, Klasse 3 - multisafe 803de – pdf399 kbDownload
Environmental Product-Declaration (EPD) according to ISO 14025 for locksen – pdf668 kbDownload
Zertifikat Schlösser für Türen nach EN 14351-1 - ift-Zertifizierungsprogramm QM 342de – pdf544 kbDownload
Anleitung multisafe 803 (MBW7)de – pdf1.13 MbDownload
Manual multisafe 803 (MBW7)en – pdf1.13 MbDownload
Catalogue FUHR Locking systems for aluminium and steelen – pdf27 MbDownload
Katalog FUHR Verriegelungssysteme für Aluminium und Stahlde – pdf27 MbDownload
Certificate Locks for doors to EN 14351-1 - ift-certification scheme QM 342 en – pdf544 kbDownload
Brochure FUHR System Solution for aluminium and steel doorsen – pdf4.55 MbDownload
Brochure FUHR Programme overviewen – pdf16.62 MbDownload
Brochure FUHR Aperçu du programmefr – pdf8.35 MbDownload
Brochure Le concept FUHR pour les portes en aluminium et en acierfr – pdf5.81 MbDownload
Prospetto La soluzione FUHR per porte in alluminio e in acciaioit – pdf4.54 MbDownload
Brochure FUHR Programma overzichtnl – pdf8.35 MbDownload
Brochure De systeemoplossing van FUHR voor aluminium en stalen deurennl – pdf7.92 MbDownload
Broszura Rozwiązanie systemowe FUHR do drzwi z aluminium i stalipl – pdf7.84 MbDownload
Брошюра Системное решение FUHR для алюминиевых и стальных дверейru – pdf5.03 MbDownload
Prospekt FUHR Systemlösung für Kunststofftürende – pdf7.21 MbDownload
Brochure FUHR System Solution for uPVC doorsen – pdf7.20 MbDownload
Prospetto La soluzione FUHR per porte in PVCit – pdf7.20 MbDownload
Brochure De systeemoplossing van FUHR voor kunststof deurennl – pdf6.75 MbDownload
Brochure Le concept FUHR pour les portes en PVC | pour le marché belgefr – pdf6.83 MbDownload

We’re happy to help.


Our experts are always on standby with tips and advice to make sure no questions go unanswered.

Questions? We’re happy to help.

Our support team is happy to answer any questions you may have about our products and provides you with sources of supply.

To support

Looking for a professional? Look no further.

Find the personal contact and specialist partners for your region here.

To contact partners

Privacy statement

We use cookies to personalise content and advertisements, offer functions for social media and analyse access to our website. We also forward information on your use of our website to our partners for social media, advertising and analysis. Our partners may combine this information with other data that you have already provided or which they have collected as part of your use of the relevant services. You can withdraw your consent at any time by adjusting your settings.

Necessary cookies help to ensure our website functions properly by enabling basic functions such as site navigation and access to secure areas of the website. The website cannot function properly without these cookies.


CookieBanner2019www.fuhr.deSaves user’s consent status for cookies on the current domain.1 yearHTTPS


Statistics cookies help website owners to understand how visitors interact with websites by anonymously collecting and reporting information.


_gatGoogleUsed by Google Analytics to limit the request rate1 dayHTTPS
_gaGoogleRegisters a unique ID that is used to generate statistical data on how visitors use the website.2 yearsHTTPS
_gidGoogleRegisters a unique ID that is used to generate statistical data on how visitors use the website.1 dayHTTPS


These cookies may be in use by our advertising partners via our website. They may be used by these companies to create a profile of your interests for the purposes of showing you relevant advertisements on other websites. They do not save personal data directly but they are based on a unique identification of your browser and Internet device. If you do not consent to these cookies, you will receive less relevant advertisements.


GPSYoutube 1 dayHTTPS
YSCYoutube 1 dayHTTPS

Further information on cookies


Please select the door type


Please select a backset


Please select a distance (centre)


Please select a follower size


Please select a locking type


Please select a faceplate size


Please select a faceplate finish

Renovation range

Your locking solution