Office swivel chair FS Line / conference and task chair

FS-Line - classic office task chair

Wilkhahn FS task chair with contas conference table

Design: Klaus Franck, Werner Sauer, 1980

Over 35 years ago two young designers at Wilkhahn recognized that sitting still cannot be healthy. Both of them wanted to give adults their natural mobility back.

Following intensive studies, they developed the FS-Line, a chair that revolutionized the office furniture industry. Since then, we have produced 40 variations of this chair. Millions of these have been sold worldwide; they have been inundated with awards and have often been imitated - but not very successfully.

The principle is quite simple: the highly flexible seat shell adjusts automatically to any change in posture. The technical term for this is: "automatic synchro-adjustment". We call it "Sitting without a driving licence."


FS Line details

the essence of the swivel chairs

The elegant silhouette of the highly elastic seat and backrest shell persists in the swivel arms. Affixed to the frame with only two screws, the shell provides support to the opening angles and movements. Once the seating height and synchronous adjustment mechanism have been adjusted, the FS chair does everything else itself. The tiniest of movements and shifts in weight are enough to change posture. 

Swivel chairs with automatic synchro-adjustment: the seat and the backrest tilt adjust automatically to the seating position of the user. When the user leans back, the backrest tension increases accordingly. Infinitely variable adjustment of tension. Forward work position lockable by pressing the lever. Infinitely variable adjustment of seat height by means of an encapsulated gas lift. 

Various types of upholstery, wide selection of upholstery materials for leather or fabric cover. Cantilever chairs and visitor's chairs are available to match all series of swivel chair models (with and without armrests).

5-star base

In die-cast aluminium, chromium-plated, polished or coated. Double swivel castors, with load-dependent braking, in black polyamide or polyurethane (for hard floors).

The tension of the backrest can be infinitely adjusted according to body weight and comfort by means of a handwheel that is conveniently located under the seat. 

The seat and backrest tilt adjust automatically to the movements of the user and adapt optimally to any new seating position.









Seat shell

In high resilient polypropylene with a flexible middle section, through-dyed in the colours natural white, platinum, asphalt and black to render marks from use hardly visible. Armrests in the same material. The upholstery comprises covered, breathing - and exchangeable - one-piece moulded foam; on some models with additional wool fleece overlay and stitched border.

FS-Line - chair- orange - Wilkhahn

Cantilever Chair

Various types of upholstery, leather or fabric covers. All series of cantilever models are coordinated with matching swivel chairs (with and without armrests).

Round steel tube, chromium-plated or coated. Some models with anti-tilt stoppers in the standard version for carpeted floors; with additional glides for hard floors.


Seat shell in high resilient polypropylene with a flexible middle zone. Armrests in the same material. Seat upholstery: one-piece moulded foam with exchangeable cover.


FS Line office swivel chair: Awards




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Wilkhahn Forum New York

Wilkhahn Inc.
601 West 26th Street
Suite 820
New York, NY 10001
Tel.: + 1 212 229 9455

Wilkhahn Forum Chicago

Wilkhahn Inc
Tree Studios
4 East Ohio Street, Studio 35 
Chicago, IL 60611
Tel.: +1 312 896 3446