The Rimadesio Opus bookshelves is made up of a rigorous intersection of essential geometries based on the figures of the rectangle and the square. His rooms are alternated according to ratios and proportions carefully studied and guided by rigid mathematical relationships, yet never monotonous to the eye. As severe in shape as it is flexible in use, Opus is a double-sided bookcase that can be positioned either in the center of the room or against the wall, also customizable by inserting drawers and flap doors.