The MB-80 OFFICE internal, double-glazed partition wall system has been designed to build fixed partition walls and walls accommodating doors in office rooms and public facilities. It allows for universal arrangement of space (not full height development, roofing, curves of any angle, etc.), application of various transparent and non-transparent infills, application of inter-pane blinds and mounting electrical installation equipment. Such partition walls are particularly recommended in buildings where high sound insulation is required. Simplicity of execution of all works on site is an important feature of this system.