THONET swivel armchair • S 43 DR range
Simplicity that makes an impact anywhere: Mart Stam removed the back legs from a chair shaped along similar principles for centuries. Through evolutionary refinement, this produced a piece of seating furniture that cuts a good figure in any setting where understatement and quality are called for. In his furniture designs, Mart Stam valued high utility and economy, both aesthetically and materially. This resulted in the linear shape, the clear construction and the improved seating comfort. Stam achieved the greatest possible reduction in the S 43 cantilever chair by combining the tubular steel frame with moulded wood parts for the seat and back. Its pure, understated shape makes this cantilever chair an exemplary design in the spirit of modernism. The artistic copyright for the strictly cubic, back-legless chair now lies with Thonet. The Natural Sciences reading room of the German National Library in Leipzig was already fitted with the S 43 cantilever chair in 1933. More than 70 years later, Thonet supplied new S 43 chairs to complete the set. Such longevity and sustainability is only achieved by high-quality tubular steel furniture, as is typical of Thonet. The range is extended by the S 43 Atelier (DR) swivel chair variants, the S 43 H bar stool 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. It is available unupholstered (S 43 DR) and with mirror upholstery (S 43 PVDR). The swivel base comes in aluminium or, for a surcharge, in tubular steel, with the moulded wood parts available 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)
- Set: Seat and back in moulded plywood
- Surface finish: Beech I (Beech II, oak, oak lightened 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: 11.1 kg (moulded plywood unupholstered) · 11.5 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 where you sit and lean back. The back of the seat shell remains visible in wood or plastic. This keeps the chair light and slender while still noticeably increasing seating comfort.

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