The construction of Delta B comes from Delta S and Delta D. The difference is in doors. The glass or fully metal doors can be opened in a range of 180-degree thanks to its robust hinges. Numbers show an approximate depth of the cabinet in decimeters. Very important parts of the cabinet are cable entries, which are located in the upper and in the bottom side. Entries are covered with a "break-out" style blanking panels, which can be broken out by a screwdriver.