More than 100 years of experience.

For the room comfort of the future.

The SIEGENIA GROUP develops solutions that bring spaces to life. With an innovative and wide ranging product portfolio for modern window systems, door systems and comfort systems. KFV Karl Fliether GmbH & Co. KG covers the entire field of modern locking systems for doors. Our complete range is rounded off by SIEGENIA-AUBI Sicherheits- Service GmbH: with products and services concerning burglary protection and window repair.

The prospect of new room comfort is the theme of the future. We need the past to be able to design both sensibly and responsibly. Because tradition is the ideal basis for sustainable innovation. Even if we didn't call it "room comfort" before, we have been working on this for over 100 years. .

The SIEGENIA History

Eugendorf A


50 years of SIEGENIA Austria
The first foreign subsidiary of SIEGENIA was founded in Eugendorf, Austria in 1972. We have remained faithful to the site in the federal state of Salzburg until today. Now, the sales office team not only controls the distribution of our products in Austria, it also controls the sales markets in Slovenia, Croatia and Bosnia-Herzegovina.
Rheinsfeld De


PORTAL product group expands production capacities
The continually growing PORTAL product group needs more space for the expansion of its production capacities and takes over the premises of SIEGENIA-AUBI Sicherheits-Service GmbH in Reinsfeld at the end of 2022. The logistics and the assembly of PORTAL compact parts are now concentrated here while the main focus of production at the PORTAL site Hermeskeil lies in the production of the COMFORT UNIT and the machining of long parts.


The TITAN comfort mushroom cam celebrates its anniversary
The comfort mushroom cam has been produced more than 500 million times and installed in windows all over the world since its market launch in 2008. Fabricators benefit from the advantages of the comfort mushroom cam, both in production and in installation, as well as from the high level of customer satisfaction. The positive features of the comfort mushroom cam offer end users a high degree of room comfort.


SIEGENIA recognised as a family-friendly company
The Frau & Beruf Siegen Wittgenstein Competence Centre recognised the Wilnsdorf-Niederdielfen site as a family-friendly operation. With flexible working hours, part-time training and childcare of children of employees in the company's own daycare centre, SIEGENIA scores points in the certification process.


ECO PASS SKY axxent receives Red Dot Award
The ECO PASS SKY axxent barrier-free threshold from SIEGENIA was awarded the "Red Dot: Best of the Best 2020" prize for its pioneering design. Only about 1 percent of more than 6,500 objects submitted by a total of 60 nations have received this award. It is exclusively awarded for revolutionary solutions by the jury, consisting of international experts in diverse specialist fields.


The SIEGENIA daycare centre turns five years old
The anniversary emphasised the importance of the daycare facility for promoting a balance between family and professional life for employees within the company. Wieland Frank handed over a voucher for a trampoline as a birthday present.


SIEGENIA online shop goes into operation
The starting signal for the SIEGENIA online shop is fired. The first product available for order is the PORTAL HS COMFORT UNIT (CU) - the customised "zero-hassle package" for large elements. The new SIEGENIA online shop makes ordering and configuration even safer, faster and easier.


SIEGENIA continues to invest in production
A new production department for PVC components is set up at the Niederdielfen site. The state-of-the-art, energy-efficient production and assembly plants strengthen the production and logistics processes of the company and demonstrate the company's commitment to the German site.
2018 _kfv


KFV has written a success story with innovative locking technology for doors. Now the subsidiary of the SIEGENIA GROUP starts its anniversary year: in 2018, KFV proudly turns 150. With several new and further developments, the German market leader of multi-point locking systems documents its continuing innovative strength and is today one of the leading lock manufacturers in Europe.
Historie 2017




SIEGENIA celebrates 20 years at its site in Russia
The Russian branch has seen positive development during these 20 years. Almost one is five windows in Russia today is equipped with hardware technology from SIEGENIA. The market share is around 21 percent.
2017 Polen


New construction of a production hall in the Poland plant. This means there is now 14,500 m2 of production and storage areas available, including a workshop and office building with social rooms.


New warehouse for PORTAL hardware
The continuing high demand for sliding hardware and the resulting growth of the PORTAL product group necessitate the building of a new warehouse: the storage capacity at the Hermeskeil site is increased considerably by 1,100 square metres.
2016 Galvanik


Commissioning of electroplating plant. The new electroplating plant has been designed for sustainability and energy efficiency and is state of the art.
Historie 2015 2


Successful launch of the new brand image with an emotional campaign, which focuses on the user benefits – and therefore makes it possible to experience room comfort.
Historie 2015 1


The new slogan underlines what has always been an integral part of our product philosophy: SIEGENIA is room comfort. Because with our products and solutions we bring spaces to life and give people a sense of well-being.
2015 Partnernetwork


SIEGENIA sets up a PartnerNetwork. It includes the provision of promotional materials and product documentation, training and a listing in the end user supplier search.
Historie 2014 3


Investment in both the future and in the location are a clear commitment to the products “Made by SIEGENIA”. The company’s centenary motto, “More drive than ever” underlines the fact that the group will continue to strive to make windows and doors functional and to ensure that fresh air is something everyone should experience.
Historie 2014 2


The current new construction of an exhibition centre with integrated test centre, together with the building of a state-of-the-art surface treatment plant in Niederdielfen are an indication of the company’s continuous modernisation process.
Historie 2014 1


Currently, more than 2,800 employees worldwide look after the development, production and sales of products with the SI and KFV trademarks to customers in 80 countries around the world. “The ideas and guiding principles of my great grandfather, grandfather and father have endured, but only innovations and constant constructive change will ensure the continued existence of our company."
2014 Kita


At the main site in Niederdielfen, SIEGENIA opens a company daycare facility. Its purpose is to make it easier for employees to return to work and to further increase the number of women in the workforce and in management positions.
Historie 2013 2


New challenges will emerge for SIEGENIA as a result of a world that is becoming increasingly more tightly networked. SIEGENIA products, for example a motorised entrance door lock, a motorised window or sliding door drive, or an energy-efficient, multi-functional ventilation device, can be used in various ways in an “intelligent and networked house” and controlled via a smartphone or the home management system.
Historie 2013 1


Today, each of the four German manufacturing sites is responsible for the development and production of one particular product range within the broad SIEGENIA product portfolio; the manufacturing site in Poland has taken on the manual assembly operations which are no longer cost-effective in Germany and the manufacturing site near Peking supplies the Chinese and Asian markets.
Historie 2008 2


2008 is the year in which the SIEGENIA-KoPiBo (3D-ComfortMushroomBolt) begins its triumphant march through the TITAN AF hardware range. As the result of its flexible height adjustment, the KoPiBo always compensates for airgap tolerances perfectly and thus reduces adjustment time considerably. Window installers are delighted by it and window users appreciate how easy the smooth-running window is to use.
Historie 2008 1


SIEGENIA-AUBI is the first hardware manufacturer in the world to get the ift Q-certification mark.
Historie 2007


All components that are not cut to length have the new ”Click-Coupling Point“ This coupling point enables linkage and extensions to be installed very quickly. These components are simply pushed in and the coupling point snaps in automatically.
Historie 2006


2006 SIEGENIA acquires the German market leader for high quality door hardware and locking systems, KFV Karl Fliether GmbH & Co. KG in Velbert. This acquisition completes the product range of SIEGENIA, making the company one of the leading providers of integrated solutions and systems for window and door functionality, and the decentralised ventilation of rooms.
Historie 2005


The ventilation technology product group moves to the Lehnscheid site in Wilnsdorf.
Historie 2004


2004 sees the founding year of the SIEGENIA-AUBI Sicherheits-Service GmbH with its site in Reinsfeld, which specialises in products, solutions and services for retrospective intruder protection on pre-installed windows and for window repairs.
Historie 2003


Five years after the acquisition, AUBI Baubeschläge GmbH and SIEGENIA-FRANK KG are merged to form the existing SIEGENIA-AUBI KG.
Historie 2002


Simultaneously, the company brings out another innovation into the market, which revolutionises the manufacturing process for window production: the TITAN iP hardware system enables hardware components to be fitted prior to assembly for the first time, offering huge flexibility.
Historie 2000


Between 2000 and 2004 SIEGENIA opens plants in China and Poland to serve the rapidly expanding markets in Asia and Eastern Europe.
Historie 1999


In 1999 SIEGENIA introduce a further innovation in the form of the first parallel window hardware (PAF). The window sash can be partially opened parallel to the frame for night ventilation and the window is also intruder resistant to RC2 in the night ventilation position.
Historie 1998 2


And from AUBI a development emerges, which is now an industry standard: the so-called “sash lifter”, which continues to lift the window sash even when sashes start to drop over time as a result of their own weight.
Historie 1998 1


With the acquisition of the AUBI Baubeschläge GmbH in Hermeskeil (Rheinland-Pfalz) in 1998, Wieland Frank expands the product and customer portfolio, thereby laying additional and important foundations for the growth of the business in international markets.
Historie 1996


With the relocation of the head office from Kaan-Marienborn to the new building in Wilnsdorf-Niederdielfen, the consolidation of administration and production into Niederdielfen – today’s headquarters – is complete. The timelessly modern and exceptional architecture of the new building wins an award from the Association of German Architects in 1997.
Historie 1994


The double-cup routing for corner and top hinges in timber windows – already prepared in the profile – facilitates painting and the positioning of the pivot point components as well as screw fixing.
Historie 1989 2


The family business sets further industry standards in terms of streamlined window production in 1989, with the introduction of the first clamp-on turn and tilt hardware for aluminium profiles.
Historie 1989 1


In the wake of political upheaval in Germany and Eastern Europe following the fall of the Berlin Wall in 1989, the company increases its expansion into other European countries, as well as into markets in the Middle and Far East. Eleven sales and distribution sites are established and the existing ones are expanded.
Historie 1988


The move from the third to the fourth generation occurs unexpectedly in 1988, as Gerhard Frank dies in the October of this year following a serious illness, aged 68. His son, Wieland Frank, aged 29, takes over the reigns of the family business, becoming managing director and personally liable shareholder.
Historie 1987


PSK PORTAL is the response to the demand for greater assembly efficiency, for greater operating convenience and for greater security. The first tilt and slide fitting, which can move sash weights of up to 150 kg is launched on the market.
Historie 1984


In a further section of the building, a new wing with an area of 4000 m2 is put into operation. With a total 29,000 m² of production and warehousing space, the most modern manufacturing facilities provide conditions for ensuring consistent quality. The company employees 700 people and exports more than 20% of its products.
Historie 1983


The SIEGENIA AEROPAC is a high-performance and energy-saving wall ventilator, which keeps road, rail and air traffic noise pollution outside, whilst providing a supply of fresh air even with windows closed.
Historie 1982


With around 1300 m2 of floor space, the new staff building is opened. In addition to a kitchen and dining room and a training room on the ground floor, washing and changing facilities are located in the basement.
Historie 1981


At the start of the 1980s, the product range is expanded to include lift and slide hardware for large sliding windows and doors, and also sound-insulated ventilation.
Historie 1978


Thousands of fittings leave the new Plant II in Niederdielfen daily and soon additional production facilities are needed. The production halls in Niederdielfen continue to be extended gradually up to 1984. Fortunately, the two oil crises of 1973 and 1979 interrupt the growth of the company only briefly.
Historie 1974


At the start of 1974, the finished-products warehouse, packing and dispatch are relocated to plant II in Wilnsdorf-Niederdielfen.
Historie 1973


In 1973 SIEGENIA presents the “trial gear”, setting new standards in window production: firstly, the retaining pocket for the lock case of the gear is produced in one drilling process and no longer requires the time-consuming process of having to be routed into the rebate. Today, both the component concept and the gear drilling are standard on turn and tilt hardware.
Historie 1972 2


On 1 April 1972 the first sales office is opened in Eugendorf near Salzburg (Austria).
Historie 1972 1


With the development of the turn and tilt fitting, FAVORIT, of which over 250 million have now been sold, SIEGENIA provides key fabrication benefits for modern window production. For the first time, SIEGENIA launches a fitting that enables the window manufacturer to give windows the “turn and tilt” function in just a few steps, using a manageable number of hardware components that can be easily combined.
Historie 1970 2


In the same year, he receives the Order of Merit of the Federal Republic of Germany for services to business.
Historie 1970 1


In the meantime, SIEGENIA has become such a famous brand that, in 1970, Gerhard Frank renames his company SIEGENIA-FRANK KG.
Historie 1969


The GLOBAL: single operation turn and tilt fitting with “all-round locking”, consisting of pre-assembled components.
Historie 1968


The SIEGENIA-COMPACT turn and tilt fitting, which sits on the sash rebate, comprises of just two pre-assembled components form: this simplifies installation considerably and gives the sash greater stability.
Historie 1967


The second plant opens in the new Weißtal industrial area of Niederdielfen. The new production facilities here include a modern electroplating system and part of the administration.
Historie 1966


Jäger-Frank KG produces the first single operation turn and tilt fitting for aluminium windows with the LM 1000.
Historie 1964 2


1964 sees 50 years of “Jäger-Frank KG Hardware for the Construction and Furniture Industries“ being celebrated.
Historie 1964 1


1964, the same year as his father dies, Gerhard Frank receives the Diesel gold medal for numerous inventions.
Historie 1962


In the following years the company grows rapidly: 1962 sees the acquisition of a new administration building in Eisenhüttenstraße. JÄGER-FRANK KG now employs over 200 people
Historie 1961


The SOLID, DUAL and VARIANT hardware represent the new generation of concealed turn and tilt hardware from the SIEGENIA company. All three types of hardware are based on a concealed push rod mechanism. The difference between the three types is the location of the operating handle: on the lower sash bar (VARIANT), above the corner gear (SOLID) or laterally centred on the window sash (DUAL).
Historie 1958


With the SIAL, the first night ventilator for windows, which is operated via handle and pull rod, is launched on to the market.
Historie 1957


As personally liable partner, Gerhard Frank becomes co-owner of the SIEGENIA company.
Historie 1955 2


1955 was the year that the SIEGENIA brand was officially born. The name – which had already been in use since the end of the war – is registered as a trademark with the German Patent Office.
Historie 1955 1


And just one year later, the first concealed turn and tilt fitting appears. Fully integrated in the window frame, it renders the mechanism of the turn and tilt window invisible and thus fulfils contemporary architectural requirements.
Historie 1954


The first non-handed turn and tilt fitting captures the market in 1954 and gives the company a distinct competitive edge. ”Turn & tilt“ describes both functions of the window, which allow it both to open and to tilt for ventilation.
Historie 1952


The expansion of the company is closely linked to the Federal Republic of Germany’s “economic miracle” and is based primarily on the window ventilation hardware product range, which is sold under the name of SIEGENIA at home and overseas.
Historie 1949


In 1949 new screw-on furniture fittings were launched, which no longer had to be set into timber. These included the FAMOS cupboard fitting and the SIEGENIA bed fitting.
Historie 1945 2


Gerhard Frank (1947-1988) returns from captivity as a prisoner of war and enters the company on 1 July 1945. With the spirit of innovation, openness and persistence, Gerhard Frank moulds the small family business into an international organisation under the experienced eye of his father, Adolf Frank.
Historie 1945 1


Together with his son, Gerhard Frank, who returned from the war in 1945, Adolf Frank succeeds in rebuilding the company that was badly damaged in the war.
Historie 1937 2


After the retirement of Wilhelm Jägers, the company becomes the limited partnership JÄGER, FRANK & Co. KG. Adolf Frank is now the only managing partner.
Historie 1937 1


However, the 1920s and 1930s were marked not only by an economic upturn, but also by setbacks, and so it turns out to be the right decision of Adolf Frank - who becomes sole managing shareholder of the Jäger-Frank KG in 1937, by then a limited partnership - to gradually switch production to modern window ventilation hardware.
Historie 1919


At the end of the war, his son-in-law, Adolf Frank, enters the fledgling company as managing director, which is then known as JÄGER, FRANK and Co. GmbH. It is now that the company begins to successfully manufacture furniture fitting and hardware; and due to his training in the fittings industry both at home and abroad, the young Adolf Frank had valuable experience in this field.
Historie 1914


On 6 April 1914 Wilhelm Jäger (1914-1937) establishes the “Kaan-Marienborn Pressing and Punching Company”