TECTUS is an innovative, completely concealed hinge system developed by precision engineering and manufacturing firm Simonswerk GmBH. The Tectus Hinge is a ground breaking door hinge system that has transformed the possibilities available to the interior design, doorset manufacture, architectural design and interior construction industries. It is no exaggeration that the Simonswerk Tectus system has revolutionised the way in which the industry thinks about door opening solutions.