The Modular construction of the 111B means that any size of installation can be equipped using a standard building block. The 111B is compatible with older style frames e.g. 105, 108 to allow extension of existing installations. Single verticals can be joined side by side for wall mounting or back to back to form a free standing system. If height reduction is required, the legs can be removed and the 111B mounted directly on the floor giving an overall height of just 1850mm.