The aim behind the structural design of AC 4 was to discreetly integrate the functional elements required for optimal comfort. Up until now, the design of office chairs has emphasised either their aesthetic appearance or their functional features.

By contrast, the integration of ergonomic features in AC 4 is so subtle that its sophisticated structural components remain concealed. It achieves a balance between the most advanced ergonomic functions and an unobtrusive appearance: the innovative technical features of AC 4 are neither put on display, nor are they hidden beneath foam padding. AC 4 is an emblematic object with an elegant appearance and uncompromising functionality, ideally suited for refined offices and conference spaces.

The elegant AC 4 Conference chair is specifically designed for meeting and conference settings, and conceals innovative ergonomic features: like the AC 4 office chair (swivel), the backrest offers 3-zone comfort. It also offers vertical spring suspension so that the chair sinks comfortably under the user.

AC 4 is available as an office swivel chair and in the version AC 4 Conference for meeting venues.



Conference chair (swivel) according to EN 16139.

  • Mechanism: FlowMotion conference mechanism (no forward tilt, no seat depth adjustment) with individual adjustment of backrest resistance. Fixed seat depth and fixed seat height with shock-absorbing seat suspension for added comfort.
  • Backrest and seat: self-supporting backrest structure with horizontally stitched padding. Backrest mount in polished die-cast aluminium. Seat upholstery in polyurethane foam. Cover in fabric or leather.
  • Armrests: Polished die-cast aluminium ring armrests, optional leather pads (pads match the leather seat cover; fabric seat covers have Nero leather pads). Armrest supports in polished die-cast aluminium.
  • Base: Four-star base in polished die-cast aluminium on glides.
  • Colours: Available in a variety of colours in standard or premium leather or in fabric options from the 'Twill' and 'Plano' fabric upholstery ranges.

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