Alias is a bookcase system. It consists in pre- defined wall-hung units and alternates open compartments with sliding doors. The compartments are available in heights corresponding to 1/2/3 modules (240/320/400 mm) and in a wide range of widths (1500/1800/2100/2400/2700/30). To guar- antee the greatest flexibility, there are three cus- tomisation possibilities: geometric contrasts, col- our palette finishes and connecting back panels. The connecting back panel is available in the same colour as the units or in a contrasting shade to re- flect a more original chromatic choice, maybe set off by a revealing ray of light.