crossline

Swivel chair

This exceptional office chair is the product of the close collaboration between scientists, engineers and designers with the aim of developing a novel seating system which moves in perfect synchronicity with the human body. This aim was achieved using the patented “Similar-Plus” mechanism and an innovative backrest design. The unique functionality also defines the singular aesthetics of this chair, which can be seen in the distinctive crossshaped backrest support structure for which the Sedus crossline models were named.

Design: Markus Dörner (Sedus Design Team)

Superior seating culture: Sedus crossline prime

crossline, in the form of the crossline prime management armchair, represents a high culture of seating. Like a shadow, seat and backrest follow every body movement in absolute harmony. The body is perfectly supported at all times, without being controlled by the technology. Once you get used to this incomparable comfort, you will never want to settle for anything less! When superlative function looks this elegant, seating culture has truly reached a new high.

Simply good posture

Perfectly engineered, Sedus crossline ensures exceptionally balanced movements, which encourages users to change their sitting position while working. Thanks to the patented Similar-Plus mechanism, combined with the individually adjustable opening angle, the backrest maintains constant contact with the back, providing continuous and optimum support. The chair can thus be ideally adapted to the respective activity of the sitter: For example, for still monitor work, the range of movement might be less than when relaxing and leaning back when telephoning, reading or contemplating.

Variety

crossline

Swivel chairs with high backrest.

crossline prime

Swivel chairs with high backrest.

Details

Lumbar support

Height-adjustable for customisation to the user's lower spine.

Multifunctional armrests.

3D adjustable to prevent tension in the shoulder and arm muscles.

Seat adjustment

The seat is generously proportioned with soft upholstery; the seat depth is adjustable to provide comfortable seating for all users, whatever their height.

Seat height

Can easily be adjusted by lever to suit the user's height.

Backrest pressure

Can be customised to suit the user's weight in an instant.

Options - crossline

	standard	optional
Armrests	3-D armrests with soft-touch covers	Without armrests 3-D armrests with leather covers
Seat mechanism	Similar-Plus mechanism	Similar-Plus mechanism with tension control and forward tilt to 4°
Seat height-adjustment	Sedo-Lift mechanism III
Base	Aluminium base, powder-coated black	Aluminium base, powder-coated white aluminium Aluminium base, polished
Model colour (mechanism and plastic parts)	Black
Specification	Hard castors for soft floors	Soft castors for hard floors

Options - crossline prime

	standard	optional
Armrests	Aluminium armrests (polished) with leather covers
Seat mechanism	Similar-Plus mechanism	Similar-Plus mechanism with tension control and forward tilt to 4°
Seat height-adjustment	Sedo-Lift mechanism III
Base	Aluminium base polished
Model colour (mechanism and plastic parts)	Black
Specification	Hard castors for soft floors	Soft castors for hard floors
Miscellaneous		Large seat

Technical specifications - crossline



User weight	Recommended for user weights up to 120 kg
Seat	• Generously upholstered seat pan, with cave-in effect seat-leg hump, front edge of seat rounded • Shaped foam (polyurethane foam) • Upholstery thickness 50 mm • Width 490 mm, depth 435 mm • Optinal sliding seat (depth 425 - 475 mm) with return function
Seat height-adjustment	• Sedo-lift mechanism III: 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 430 - 545 mm
Base	• Aluminium base, powder-coated, black, white aluminium or polished aluminium • Hard or soft castors with 65 mm diameter
Backrest	• Supporting structure in polyamide • Upholstery construction consisting of a flexible padded polypropylene frame with soft slats • Upholstery construction on supporting structure movable due to rotating bearings (at shoulder height) and sliding bearings (below the region of the iliac crest) • Lumbar support adjustable by up to 60 mm • Version in leather has ribbed backrest upholstery
Armrests	• Multifunctional 3D armrests with soft-touch or leather, height adjustment 90 mm (220 - 310 mm), clear width 460 - 510 mm
Mechanism	• Similar-Plus mechanism with tension control: balanced force curve thanks to coordinated spring concept • Seat and backrest move completely synchronised with the body • Synchronicity relationship between seat and backrest 1:3.3 • Sensitive locking of quick adjustment facilitates adaptation to different users‘ body weight (500 to 1500 N [10 N = 1 kg]) • With pre-selectable backrest opening angle in four stages up to 32° (0°, 11°, 20° and 32°) • Permanent back support guaranteed even with the seat tilted far back due to the balanced force progression of the mechanical spring • Opional 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 • Red Dot Design Award 2009, Winner
Warranty	5 years 30 years for Sedo-lift mechanism

Technical specifications - crossline prime


crossline prime
User weight	• Recommended for user weights up to 120 kg
Seat	• Generously upholstered seat pan, with cave-in effect seat-leg hump, front edge of seat rounded • Shaped foam (polyurethane foam) • Width 490 mm, depth 435 mm • Optional sliding seat (depth 425 - 475 mm) with return function
Seat height-adjustment	• Sedo-lift mechanism: complete cushioning of body weight, even in lowest seating position, no compression of the spine when sitting downprovided by hydraulic interlock, completely free of wear and tear, mechanical failure or gas lift replacement, height adjustment between 420 - 520 mm
Base	• Aluminium base polished • Hard or soft castors with 65 mm diameter
Backrest	• Polished aluminium supporting structure • Upholstery construction on supporting structure movable due to rotating bearings (at shoulder height) and sliding bearings (below the region of the iliac crest) • Upholstery construction consisting of a flexible padded polypropylene frame with soft slats • Lumbar support adjustable by up to 60 mm • Version in leather has ribbed backrest upholstery
Armrests	• Polished aluminium armrests with leather covers • Clear width 510 mm
Mechanism	• Similar-Plus mechanism with tension control: balanced force curve due to coordinated spring concept • Seat and backrest move completely synchronised with the body • Synchronicity relationship between seat and backrest 1:3.3 • Sensitive locking of quick adjustment facilitates adaptation to different users‘ body weight (500 to 1500 N [10 N = 1 kg]) • Permanent back support guaranteed even with the seat tilted far back due to the balanced force progression of the mechanical spring • With pre-selectable backrest opening angle in four stages up to 32° (0°, 11°, 20° and 32°) • 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 • Tested for harmful substances by TÜV Rheinland LGA Products GmbH • GREENGUARD certified (cn-133) • AGR quality seal - Healthy Backs Campaign
Warranty	5 years 30 years for Sedo-lift mechanism