The operable glass walls Estfeller are a new way to divide space with elegance and transparency while respecting the architectural environment in which they are inserted. They are composed of several single elements in crystal, which run along a guide fixed to the ceiling and are assembled one after another until the the entire wall. Is completed not provided with any guidance on the floor, except in the automatic version, the handling of the elements is simple, fast and safe. The advantage of a sliding glass wall Estfeller is essentially to occupy reduced space when it is stored, and when the wall is complete with all its elements.