Consisting of the companies Prüm, Garant, Invado and RWD Schlatter, the Doors Division is one of Europe's leading providers of interior doors and timber frames. The Doors Division has four production sites: two in Germany, one in Switzerland and one in Poland. In all three domestic markets, the division offers its customers a comprehensive range of products from standard doors through to complex functional doors.



Areas of activity

Production sites

Functional doors
Interior doors

Amt Wachsenburg (D)
Ciasna (PL)
Roggwil (CH)
Weinsheim (D)


Average headcount 2019 (in FTE)







GECC Shanghai

Energy efficiency makes a career - now also in China. Sustainable construction and housing are becoming increasingly important in the Far East. One example of this is the German Energy Center & College (GECC) in Shanghai, which was completed at the end of 2010. In addition to modern heating systems and innovative pumps, high-quality doors from GARANT Türen und Zargen GmbH are used.

PRORA Solitaire

It is considered to be the longest building in the world: the "Colossus of Prora" - probably the most spectacular and world-famous monument by the sea. Today Prora Solitaire convinces with ultra-modern holiday apartments and promises attractive and sophisticated living in the immediate vicinity of the beach. The luxurious standard is underscored by the exclusive high-quality white lacquer doors of the Royal 251 model series.