Nassau Indus Deur is the result of a merger of two companies: Nassau Deur and Indus Deur. Both companies were active in the area of doors for the industrial market since the seventies. In 2000 Nassau decided to pool their strengths. As part of Nassau Door, Nassau Indus Deur are one of the biggest door manufacturers in Europe. The doors are made at the Danish branch. The other branches concentrate on sales and servicing (placement, maintenance) of industrial doors.