M400 Roger Tallon staircase

Roger Tallon’s (1929-2011) spiral staircase in cast aluminum, composed of 16 steps, a railing, and a landing balustrade.

Initially designed while Tallon was an advisor for CIFOM (the professional association of foundry workers) as part of a project exploring the applications of cast steel, the M400 staircase quickly became a resounding success. First produced in steel, it was subsequently manufactured in cast aluminum from 1968 onwards by the Lacloche gallery, which offered it in three different diameters.

Its name, “M400,” comes from the “M” of “module”: designed to furnish the nightclub of his filmmaker friend Raoul Lévy. The unit of measurement is based on a square slab of 400 mm per side, onto which various elements can be positioned to furnish a space. Roger Tallon designed a grid system based on a 400 x 400 mm module for the metal floor tiles, from which the basis for all the objects in the range would be derived: stools, seats, tables, lighting, coat racks and stairs.