Humanscale World Chair


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The World Chair marks Humanscale's first foray into all-mesh task seating. Like its mesh-backed forerunner, Liberty, the World chair's tri-panel backrest hugs the body to provide tailor-made lumbar support, while its mesh seat eliminates contact stress under the thighs. But the World’s major innovation is its mechanism-free recline action, which leverages two parts of the chair’s frame and the laws of physics to provide automatic, balanced support throughout the full range of recline.

The first office chair that adjusts without a lever! Intuitive motion follows your body movements to automatically find the ideal angles to optimally support your body. 

Features & Benefits
  • "Virtual Mechanism"; two part frame uses body weight to adjust chair angles
  • Frameless front seat edge eliminates contact stress behind the knees
  • One year warranty on motor and electrical parts
  • Form-sensing mesh creates body-contouring, adjusting lumbar support

Non-stretch, tri-panel mesh back
Non-stretch mesh seat
Optional upholstered polyurethane foam seat cushion
External Frame:
Injection-molded, structural, integral color glass-filled Nylon 6
Stored Energy Devices:
Pneumatic cylinder for adjustable seat height
Optional Foot Ring:
Chrome-plated steel
Self-Adjusting Recline
Mechanism-free counter-balance recline action automatically provides the right amount of support through the full range of recline motion, regardless of user size and weight
No tension springs to adjust
No recline locks to set/release
During recline, the angle between torso and legs opens up for better body function
User maintains near-constant eye level during recline
Pivoting Backrest
Extra motion of the backrest during recline automatically adjusts to the changing needs of the spine
Provides additional lumbar support as needed
Form-Sensing Mesh:
Tri-panel, non-stretch mesh construction creates body-fitting contours and self-adjusting lumbar support for a customized fit
No external lumbar devices to adjust, break or lose
Low-abrasion mesh protects clothing
Modular for easy replacement and upgrades
Non-Stretch Mesh Seat:
Automatically sculpts to match body contours
Cradles the body in flexible, breathable mesh
Frameless front edge eliminates contact stress under the thighs
Standard Cylinder:
Provides seat height range that accommodates 95% of the population
Size adjustable to fit 95% of the population
Form-sensing mesh provides perfect lumbar support—automatically
Manual adjustments for fit-to-size:
Seat Height: 5” (127mm) adjustment range
Seat Depth: 3.5” (89mm) adjustment range
3” (76mm) standard hard casters
Seat Depth:
(from face of lumbar to front of seat) 16.5"– 20" (419mm – 508mm)
Seat Height:
(floor to compressed front center of seat cushion)
16"– 21" (406mm – 533mm) standard

Seat Width:
21.1" (536mm)
Backrest Height:
23" (584mm)
Backrest Width:
19" (483mm)
Armrest Height:
(from compressed seat cushion to top of armrest) 9.75" (248mm) fixed
7.75" – 11" (198mm – 279mm) adjustable
Armrest Length:
(from face of lumbar to front of arms) 12.5" (318mm)
Distance between Armrests:
19" (483mm)
36.5" – 41.5" (927mm – 1,054mm) standard
32.75" – 39.5" (908mm – 1,003mm) low cylinder
37.5" – 42.75" (953mm – 1,086mm) tall cylinder
41" – 49" (1,041mm – 1,245mm) high cylinder
Base Diameter - 24" (610mm)
Chair Width - 26" (660mm)
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No Interest

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