S43 is a chair by Mart Stam for Thonet. Without or with armrests. Frame tubular steel chrome-plated (also stackable). Moulded plywood seat and backrest in stained beech, or lacquered in 11 different colours. Also available with upholstered wood shells, covered with fabric. The cantilever chairs from programme range S43 with a set in black as a standard have black rivets on the seat and backrest. All other colours are assembled with silver rivets.
S43 is the quintessence of modern design. Studies of design Stam focus relied on straightforward forms. The chair S43 combined the tubular steel frame with moulded plywood shells for seat and back and thus created an absolute reduction. Due to the comfortable flexing effect of the frame, upholstery is unnecessary. Today, Thonet owns the artistic copyright for this strictly cubic “chair with no rear legs”.