There are some darkness solutions which never go out of fashion: the opaque awning, which you may remember from school film presentations, is still around today. At Griesser, it’s called Oscuromatic^®. The option of total darkness should be available in presentation rooms or classrooms, and it’s also desirable from time to time in operating rooms or in professional dark rooms where quality cannot be guaranteed without it. The specially coated and flame-retardant Griesser Oscuromatic^® fabric and the lateral guide rails with their brush seals reliably shut out all incidences of light. Oscuromatic^® can of course be operated fully automatically.