THONET swivel armchair • S 43 FDR programme
Simplicity that makes its mark everywhere: Mart Stam took the back legs away from a chair that had been shaped along similar principles for centuries. Through evolutionary refinement, this produced a piece of seating furniture that cuts a fine figure anywhere understatement and quality are called for. In his furniture designs, Mart Stam valued high utility and economy, both aesthetically and materially. The result is the clean-lined shape, the clear construction and the improved seating comfort. Stam achieved the greatest possible reduction with the cantilever S 43 by combining the tubular steel frame with moulded wood parts for the seat and back. Its pure, restrained shape makes this cantilever chair an exemplary design in the spirit of modernism. The artistic copyright for the strictly cubic chair without back legs now belongs to Thonet. The Natural Sciences reading room of the German National Library in Leipzig was already furnished with the cantilever S 43 in 1933. More than 70 years later, Thonet supplied new S 43 chairs to complete the collection. Only high-quality tubular steel furniture, as is typical of Thonet, is this durable and sustainable. The programme is extended by the swivel chair variants S 43 Atelier (DR), the S 43 H bar stools and the S 43 K children's chairs.
The THONET S 43 Atelier transfers the cantilever design onto a five-star swivel base with castors and is height-adjustable, with the armrests forming part of the frame. It is available unupholstered (S 43 FDR) and with mirror upholstery (S 43 PVFDR). The swivel base is available in aluminium or, for a surcharge, in tubular steel, and the moulded wood parts in further stain shades, in oak, or with opaque lacquer finish.
- Design: Mart Stam, 1931 (artistic copyright)
- Type: Swivel armchair
- Frame: Five-star swivel base, with castors
- Frame version: Aluminium polished or powder-coated (tubular steel chrome-plated or RAL 9005 for a surcharge)
- Castors: Black (chrome-plated for a surcharge)
- Armrests: With armrests
- Set: Seat and back in moulded plywood
- Surface version: Beech I (beech II, oak, bleached oak or opaque lacquer finish for a surcharge)
- Upholstery: Mirror upholstery (mirror upholstery seat and back)
- Seat height: 42 cm (moulded plywood, unupholstered) · 43 cm (mirror upholstery seat and back)
- Weight: 11.7 kg (moulded plywood, unupholstered) · 12.1 kg (mirror upholstery seat and back)
Dimensions (W x D x H): 64 x 64 x 76 cm
Mirror upholstery: With mirror upholstery, only the inside is upholstered – precisely the area on which you sit and lean back. The rear of the seat shell remains visible in wood or plastic. This keeps the chair light and slender while still noticeably improving seating comfort.

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