• Swivel-tilt mechanism (4200D, 4200) Pneumatic height adjustment,
   tension control
• Compound curve seat and back shell with gentle lumbar curve for correct
   posture
• Waterfall seat design to reduce muscle fatigue
• High density seat and back foam for comfort and durability
• Injection molded plastic armrests
• Fully upholstered seat and back
• Oval steel frame finished with high impact, textured, black Crinkle epoxy
   powder coat electrostatically applied for ccorrosion resistance
• 5 prong heavy duty nylon base
• 2" dual wheel carpet casters
• Finish - mechanism, arms, base, casters and trim available in black only
• California fire code #117
• (4201) standard with upholstered arm caps
• ANSI/BIFMA