The JHK C-3718 ergonomic office chair delivers reliable spine support for extended desk work through a curved lacework mesh backrest paired with a high-density sponge seat. The breathable material promotes airflow to keep you cool, while the integrated lumbar contour aligns with your lower back to reduce fatigue during long study or remote work sessions.
An internal pneumatic lever controls seat elevation between 18.5 and 22.2 inches, allowing precise positioning for monitors and keyboards at varying desk heights. A tilt mechanism offers continuous locking from an upright 90-degree angle to a relaxed 120-degree recline. Five dual-wheel casters roll smoothly across tile, wood, carpet, and laminate without marking surfaces, and the reinforced metal frame accommodates loads up to 250 pounds.
Flip-up armrests attach solid support for your forearms before lifting vertically to clear floor space beneath compact computer desks. The five-spoke base locks into place during full extension to prevent wobbling. Standard assembly takes approximately 10 to 15 minutes using the included hardware, wrenches, and step-by-step visuals.
Core Specifications
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Weight Capacity: 250 lbs maximum load
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Height Adjustment: Pneumatic range from 18.5" to 22.2"
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Tilt Mechanism: 90° to 120° rocking positions
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Seat & Back Materials: High-density foam cushion with elastic lacework mesh
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Armrest Configuration: Pivot-mounted, flip-up vertical design
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Base & Casters: Metal five-star frame with multi-directional smooth-roll wheels
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Setup Requirements: Included tools and illustrated manual complete installation in 10–15 minutes
