open mind

Swivel chair

Vision. Transparency. Clear design. Concentrating on the essential, open mind motivates with exceptional freedom of movement. Lean back and relax. Correct posture is ensured by this aesthetically pleasing swivel chair. With its innovative backrest frame and highly flexible membrane covering in a refreshing range of colours. Unconstrained by time or place. Open to new tasks.

Design: Mathias Seiler (Sedus Design Team)

The professional solution for relaxed and efficient working

Greater simplicity of design is hardly possible. Just like the open up chair, open mind also offers extensive manoeuvrability. This allows a flexible sitting or lying posture, thanks to the “Similar” mechanism, with its large opening angle which moves in  synchrony with the body. The integrated backrest support with highly flexible membrane ensures ideal sitting comfort – in accordance with the rules of bionics. Additional features such as seat depth and tilt adjustment unite the ambitious design with the outstanding ergonomics.



BackrestAdjustable backrest pressureAdjustable lumbar support
Backrest with flat upholstery pad
Different cover for backrest upholstery (depending on version)
Height-adjustable neck support in leather
Coat-hanger (depending on version)
ArmrestsPlastic armrestsWithout armrests
Standard armrests with leather covers
3-D armrests with soft-touch covers
3-D armrests with gel-pad covers
3-D armrests with leather covers
Seat mechanism“Similar” mechanismSimilar mechanism with tension control and forward tilt 4°
Sliding seat (adjustment range 60 mm) (depending on version)
Seat height-adjustmentSedo-Lift mechanismGas lift mechanism
BaseAluminium base, powder-coated black

Aluminium base, powder-coated white aluminium
Aluminium base, polished

Model colour (mechanism and plastic parts)Black


SpecificationHard castors for soft floorsSoft castors for hard floors
open mind

User weight Recommended for user weights up to 120 kg 
Seat • Anatomically shaped seating surface with pelvis support, seat hollow and rounded front edge of seat 
• Shaped foam (polyurethane foam) 
• Upholstery thickness 40 mm
• Width 485 mm, depth 430 mm 
• Optional sliding seat with seat depth 400 - 460 mm
Seat height-adjustment 

• Sedo-lift mechanism: complete cushioning of body weight, even in lowest seating position, no compression of the spine when sitting down provided by hydraulic interlock, completely free of wear and tear, mechanical failure or gas lift replacement, height adjustment between 420 - 520 mm 
• Opional gaslift for infinitely variable height adjustment 410 - 545 mm 
• Optional gaslift for counter design with footring

Base • Aluminium base, powder-coated, black, white aluminium, white or polished aluminium 
• Hard or soft castors with 65 mm diameter

• Backrest of frame fitted with membrane (covering with 6 different colours), optional flat cushion 
• Optional neck support fully covered with height and angle adaptation, adjustment range 105 mm, forwards inclination 25°, for models in fabric in black vinyl, for models in leather, the leather colour matches the upholstery choice 
• Optional lumbar support with height adjustment, fully covered with material, with 100 mm height adjustment for precise fit around user‘s back 


• 3D armrests with soft-touch or gel-pad covers, height adjustment 100 mm (200 - 300 mm), clear width 500 mm,  in conjunction with sliding seat 445 - 510 mm 

Mechanism • Similar mechanism with tension control: balanced force curve due to coordinated spring concept 
• Backrest inclination to approx. 32°, can be locked in virtually continuously variable manner (11 different settings) 
• Seat and backrest move completely synchronised with the body
• Adaptation to different user weights enables sensitive latching of the rapid adjustment mechanism (leaning pressure 450 - 1200N and 550 - 1500N (stronger spring) [10N = 1 kg]) 
• Synchronicity relationship between seat and backrest 1:2.7 
• Permanent back support even when the backrest is inclined backwards at a wide angle, due to uniform force distribution of the mechanical springs 
• Optional seat-inclination adjustment mechanism (- 4°) for even less pressure on the upper thighs
Standards / Certificates 

• GS label by TÜV Rheinland LGA Products GmbH / DIN EN 1335 
• Ergonomics Certificate by TÜV Rheinland LGA Products GmbH
• Tested for harmful substances by TÜV Rheinland LGA Products GmbH
• QUALITY OFFICE quality seal 
• GREENGUARD certified 
• AGR quality seal - Healthy Backs Campaign 
• Design Award of the Federal Republic of Germany, 2004, Commendation 
• iF product Design Award 2003
• Red Dot Design Award 2003

Warranty 5 years
30 years for Sedo-lift mechanism


TO MEDIACENTER    You can also download all the images and documents from the Sedus Mediacenter.

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