A blind system uses a typical door or window frame that has a hermetically sealed double glazing within an opening of its main frame. A blind assembly is removably received within a rabbet of the main frame while a secondary frame is removably attached to the main frame by passing screws through the secondary frame, the screws being received within bosses located in the rabbet of the main frame, the secondary frame overlying the blind assembly. A single glazing is sealably attached to the secondary frame. The blind assembly is bordered by a spacer that holds a desiccant therein.