System supplier to the vehicle industry · since 1935
Vehicle windows,vehicle doors,partitions.
Carl Wilhelm Cleff GmbH & Co. KG has been developing and producing vehicle windows, vehicle doors and spare parts as a system supplier to the international vehicle industry since 1935 – for rail, commercial and special vehicles.
- DIN EN ISO 9001:2015Quality management
- DIN EN ISO 14001:2015Environmental management
- DIN EN 15085-2 CL1Welding of rail vehicles
- DIN EN 17460Bonding in rail vehicle construction
Brand film
Commercial vehicles care for the world.
Rail, coach, public transport, emergency and special vehicles: wherever people step on and off every day, they pass through windows and doors made in Wuppertal. One minute on what we do.
Markets
Windows and doors for every vehicle that needs a view.
Rail
Rail vehicle manufacturers today place the highest demands on the functionality and durability of the products used.
- Customer-specific solutions
- Driver's cab entrance doors
- Engine room connecting doors
- Maintenance doors, control cab doors
- Front windows
- Driver's cab windows with various functions – electromechanical, flush-mounted, insulated glazing
Bus
With consistently high quality and many innovations we have become one of the leading manufacturers in Europe.
Learn moreCommercial & special vehicles
Commercial vehicles make a valuable contribution to the most diverse tasks every day.
Learn moreDefence logistics & troop transport
Cleff vehicle windows and doors are also found in light, unarmoured defence logistics and troop transport vehicles, as well as emergency vehicles of the ambulance and fire services.
Learn morePublic transport
For Carl Wilhelm Cleff, system supply means not only developing and producing vehicle windows and doors, but also – on request – sensibly and efficiently complementing these products with important components such as frames and complex sealing, hinge and locking systems.
Learn moreCertified
Quality, proven
Five certifications and approvals stand behind every Cleff delivery – from the management system to the joining processes on the rail vehicle.
- 01Quality managementDIN EN ISO 9001:2015
Certified quality management system across development, production and service.
- 02Environmental managementDIN EN ISO 14001:2015
Certified environmental management for plant, processes and material cycles.
- 03Welding of rail vehiclesDIN EN 15085-2 CL1
Welding certification at the highest certification level for rail vehicles and components.
- 04Bonding in rail vehicle constructionDIN EN 17460
Certified adhesive bonding of rail vehicles and components, successor to DIN 6701.
- 05Quality capability Deutsche BahnQ certificate
Quality capability rating for rail vehicle parts issued by Deutsche Bahn.
Product solutions
From the glass to the complete door system.
Vehicle windows
Driver's cab, side, front and rear windows, sliding, hopper, pivot, drop and top-hung windows, Flush Window, emergency exit windows.
Vehicle doors
Entrance, driver's cab, engine room, maintenance and partition doors – also pressure-tight, as complete door systems.
Partitions
Glass partitions with grab poles, partition elements, partitions with door elements, glass doors.
Driver protection DPS
Driver Protection System – TÜV-tested, in more than 4,000 buses, hygiene and assault protection for retrofit.
System supply
Window and door systems with frame, seals, mechanisms, attachments and logistics – everything from a single source.
Glass
Toughened, laminated, insulated, UV and acoustic glass, ceramic printing, emergency exit glass, heated glass.
Spare parts
Rubber profiles, aluminium profiles, handles, glass with attachments – spare parts competence centre for bus and rail.
Cleff in numbers
Competence
Alongside numerous in-house developments and innovative products such as the Flush Window – a flush-mounted vehicle window – you can expect in-depth advice on “glass, frame and function”, proactive action and on-schedule production.
As a certified supplier, Cleff has its own design department, extensive vertical manufacturing capabilities, an in-house test centre and all necessary certifications. Our customers benefit from the advantages of a medium-sized company: flexibility and flat hierarchies.
Wuppertal
One site since 1935. In service worldwide.
What is engineered and built here runs in rail vehicles, buses and special vehicles in 25 countries - pane by pane, door by door.
Process
From enquiry to series production
Vehicle glazing is not a catalogue part. Every pane, every frame and every door is built for a specific vehicle, a specific installation situation and a specific specification. Engineering, production and testing are all on one site in Wuppertal.
- 01Enquiry and consultation
We clarify the installation situation, opening type, glazing build-up and the applicable standards before a drawing is made.
- 02Engineering
The window, door or partition is designed as a component of the vehicle – frame, sealing planes, fittings and add-on parts as one whole.
- 03Sampling
Prototype build and coordination on the real component. Changes happen here, not in series production.
- 04Testing and release
Testing in our own test centre. Bonding and welding processes are certified to DIN EN 17460 and DIN EN 15085-2 CL1.
- 05Series and spare parts
Series production and spare parts supply across the service life of the vehicle – including long-running fleets.
References
Trusted through decades of series supply.
- Alstom
- Beach-Tech
- Concorde
- Deutsche Bahn
- Düwag
- EvoBus
- Gangloff
- Heiter-Blick
- Kässbohrer
- Komatsu
- Linsinger
- MAN
- Morelo
- ÖBB
- SBB
- Scania
- Shiptec
- Siemens
- Stadler
- VDL
- Voith
- Volvo
- Vossloh
- Ziegler
- Alstom
- Beach-Tech
- Concorde
- Deutsche Bahn
- Düwag
- EvoBus
- Gangloff
- Heiter-Blick
- Kässbohrer
- Komatsu
- Linsinger
- MAN
- Morelo
- ÖBB
- SBB
- Scania
- Shiptec
- Siemens
- Stadler
- VDL
- Voith
- Volvo
- Vossloh
- Ziegler
In Wuppertal since 1935. Cleff windows and doors are on the road in 25 nations today.
Carl Wilhelm Cleff GmbH & Co. KG
Driver protection systems
Full-height glass separation between the driver's workplace and the passenger area - fitted without distortion, cleanly sealed, barely noticeable in service.
Partitions
Floor-to-ceiling partition elements with grab rails and glass doors, matched to car body, floor build-up and cleaning cycles.
Frequently asked questions
Frequently asked questions
Which vehicles does Cleff make windows and doors for?
Rail vehicles (coaches, locomotives, metros, trams, heritage trains), buses (coaches, intercity, mini and city buses), motorhomes, special vehicles (fire and ambulance service vehicles, snow groomers, light defence logistics and troop transport vehicles), construction and agricultural machinery, and watercraft such as ferries, inland and seagoing vessels.
What does system supply mean at Cleff?
In addition to developing and producing windows and doors, system supply means adding frames, complex sealing, hinge and locking systems, handle mechanisms and attachments – as one solution matched to the overall design, including logistics.
Which certifications does Cleff hold?
Quality management DIN EN ISO 9001:2015, environmental management DIN EN ISO 14001:2015, welding of rail vehicles DIN EN 15085-2 (CL1), adhesive bonding of rail vehicles DIN EN 17460 (successor to DIN 6701) and Deutsche Bahn's qualification rating for rail vehicle components.
Does Cleff supply spare parts for older vehicles?
Yes. Our spare parts competence centre supplies rubber profiles in various Shore hardnesses, aluminium profiles, handles, glass with attachments and complete assemblies – for refurbishment and fleet maintenance of buses and trains.