Modular bookcase composed of fixed elements in beech wood which can be positioned one after the other; it is also availabe with a lateral sliding element with an extension up to cm 72. The frame is in polished beechwood. The shoulder of the sliding element is in veneered beechwood, with rack and shelf support in nickel-plated metal. In order to secure stability when using the sliding extension, each element (either fixed or sliding) is equipped with at least three intermediate shelves. The fixed element is supplied with a 35W halogen bulb and a sensor-switch on the middle post. All the elements have a depth of cm 40 and a height of cm 234. The width of the fixed elements is cm 102, while the width of the lateral elements with sliding extension goes from cm 108 to cm 180. In order to calculate the total width of each desired composition, add the width of the shoulder of the lateral element, cm 6, to the total width of the fixed elements.