THONET cantilever chair, stackable, with armrests • S 55 ST Evo range
A comfortable, elegant all-rounder based on the cantilever construction principle. With its continuous seat shell, it offers maximum comfort, a formally clear design, and is manufactured to the highest Thonet quality standards. Its range of use spans conference and meeting rooms, training and seminar rooms, and living spaces. The model is made in two different backrest heights, as a swivel chair variant, and also in a stackable version.
The S 55 PFST Evo cantilever chair is the fully upholstered Evo version of the range: its moulded plywood shell has a lumbar support and is covered all round, with the option of a simple seam or French seam. The frame is made of chrome-plated tubular steel, and the armrest pads are made of elastomer plastic, with nappa leather available as a chargeable option. It stands 88 cm high, with a seat height of 47 cm and an armrest height of 67 cm. The chairs are stackable. POM plastic glides and felt glides are available for an additional charge.
- Design: Thonet Design Team, 2010
- Type: Cantilever chair
- Frame: Tubular steel
- Frame version: Chrome-plated
- Glides: POM plastic glides or felt glides available for an additional charge
- Armrests: Elastomer plastic armrest pads (nappa leather armrest pads available for an additional charge)
- Set: Moulded plywood shell with lumbar support
- Upholstery: Full upholstery with simple seam or French seam
- Stackability: Stackable
- Armrest height: 67 cm
- Seat height: 47 cm
- Weight: 11.5 kg
- Dimensions (W x D x H): 55 x 61 x 88 cm
Full upholstery: With full upholstery, the seat shell is covered all round with fabric or leather, including the back. The wood surface is then no longer visible. This gives the chair a softer, calmer, more homely feel than mirror upholstery.
Lumbar support: The lumbar support is a targeted contour in the backrest at the height of the lumbar vertebrae. It supports the lower back exactly where its natural curve lies, relieving strain during longer periods of sitting, without the need for additional mechanisms or adjustments.
Elastomer plastic: Elastomers are plastics that retain their shape but yield slightly under pressure. Thonet uses them for the armrest pads: they feel pleasantly warm to the touch, unlike bare metal, give a little when leant on, and are very resistant to daily use.

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