Sliding doors that disappear into the wall are emblematic of the change in the use of living space. Rigid room divisions into living, sleeping and cooking areas are increasingly giving way to variable concepts that combine functional spaces as required. Doors connect rooms to form units - or separate them to create intimacy and security. WINGBURG offers the perfect instrument for implementing variable living and room concepts, because sliding doors running in the wall are no longer part of the room when open. They limit it neither functionally nor aesthetically. Their detail-reduced appearance follows the desire for flat surfaces and uniform material appeal.