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Key features

Thanks to the wide range of arrangement possibilities, SO-one perfectly adjusts to each user providing them with optimal working conditions. An aesthetically pleasing double-sided upholstered backrest, 2-D and 4-D adjustable armrests, a contoured backrest with visually attractive stitching, a free floating possibility and a backrest lock in 5 positions – these are the biggest advantages of the line.


SO-one is a model that allows for combining two different upholstery colours – the right colour arrangement makes the chair an element that highlights the character of the office. The horizontal stitching on the backrest is an additional visual advantage.


LP11 synchronous mechanism with such functions as:

  • free floating the backrest and the seat titling synchronously
  • backrest tilt angle of 33° synchronised with the seat tilt of 11°
  • possibility of backrest lock in 5 positions
  • quickly adjustable backrest tilt force by means of a controllable knob placed on the right side
    of the seat
  • adjustable seat depth 60 mm, possibility of seat lock in 6 positions (additional option)
  • Anti-Shock - feature protecting the user’s back from being hit by the backrest after the lock
    is released
  • seat negative angle of 3˚ tilting with the backrest at 6˚, which guarantees the optimal
    support for the user’s back at each tilted position of the chair (additional option)
  • adjustable backrest height 70 mm
  • smoothly adjustable chair height with a pneumatic lift.

Seat and backrest

Swivel chair:
Seat – structure is made of 10,5 mm thick 9-layer beech plywood, covered with cut foam 50 mm thick, density 40 kg/m³, seat depth adjustment 75 mm
Backrest – structure is made of 12 mm thick 8-layer beech plywood, covered with cut foam 30 mm thick, density 35 kg/m³ at the front and cut foam 10 mm thick, density 35 kg/m³ at the back.
Headrest – structure made of polyamide +30% glass fiber; cut foam 10 mm thick, density 35 kg/m³.
Lumbar support – mechanical (LS2), depth adjustable – 15 mm.

Side chair:
Seat – structure is made of 10,5 mm thick 7-layer beech plywood, covered with cut foam 50 mm thick, density 40 kg/m³.
Backrest – structure is made of 12 mm thick 8-layer beech plywood, covered with cut foam 40 mm thick, density 35 kg/m³ at the front and cut foam 10 mm thick, density 35 kg/m³ at the back; backrest bracket made of 4 mm thick flat steel strip, powder painted black.

4 Mafra colours available (for side drops and back of backrest):

  • MR01 – Mafra black
  • MR02 – Mafra grey
  • MR03 – Mafra blue
  • MR04 – Mafra green


Swivel chair
Fixed armrests – made of black plastic with a pads made of soft black polyurethane.
2-D armrests – made of black plastic with pads is made of soft black polyurethane, the range of adjustment: height – 80 mm, width – 25 mm to one side.
4-D armrests – made of black plastic with pads is made of soft black polyurethane, the range of adjustment: height – 80 mm; width – 25 mm to one side; forward / backward movement of the pad – 50 mm; rotary movement of the pad ± 25˚.

Side chair
Armrests integrated with frame of chair, made of steel tube Ø 22 × 3 mm;
Armpads made of PP in black color or made of 10-layer plywood (thickness 12 mm) natural color or dyed. 23 wood colours available (for plywood armpads):
Beech 1.007, Orange 1.010, Walnut 1.031, Calvados 1.025, Wenge 1.033, Colombo 1.032, Havana 1.076, Black 1.043, Alder 1.040, Cognac 1.008, Mahogany 1.016, Cherry 1.042, Palisander 1.023, Beech grey 1.06R, Slate 1.06S, White 2.09S, Saffron 2.09R, Orange 2.09T, Pink 2.09Y, Mint 2.09U, Light Blue 2.09W, Dark Graphite 2.06Y, Black 2.07Y.

Chair base

Swivel chair
Five-star base made of black polyamide, or polished aluminum.

Side chair
Sled base – Ø 22 × 3 mm steel tube, chromed or powder coated black, stackable up to 3 chairs.

Castors/ Glides
Swivel chair
Black double-jointed castors equipped with selfbraking mechanism without load for soft floors (ESH) or hard floors (ESHH), Ø 65 mm.
Side chair:
Felt glides for hard floors (option).

Quality marks (for selected product configurations)
GS Safety Certificate

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Other matching products


Minimalistic form and no unnecessary structural elements. Only things that ensure comfort of use and visual lightness. The versatility opens the way to multiple arrangement options and types of interiors. CS5040 fits perfectly into modern offices, designer studios and friendly home offices. Thanks to the number of functional solutions applied in the desks and workbenches, both individual and team work is extremely comfortable.


In a contemporary office people change their work styles smoothly. The proper space arrangement, which gives employees a chance to choose the place where they want to perform their professional duties, can increase their efficiency by up to 60%.

Easy Space

The optimal arrangement of a workplace should respond to the processes realised by the employees who work there. It is advisable to choose equipment that is universal while being fully functional. To facilitate effective everyday work, the best support is often provided by simple and proven solutions – such as the Easy Space furniture system.


The Flib family of mobile, folding conference tables consists of tables available in 5 different shapes, as well as 2 table tops serving as connectors for 90 degree angles. The quick enlargement of a conference space is possible thanks to the combination of rectangular and oval table tops.

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