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The 980 range synchronized mechanism with its elegant streamlined design incorporates a patented system with a 10-setting and 1/4 turn rotation lever, which enables the chair position to adapt fast to very light or very heavy persons. The forward pivot point and the
anti-shock locking system ensure utmost comfort and safety, with 24° tilting action of the backrest. Possibility to be fixed at seat art. 811 to get function of seat slider.


    Tilt: 24°
    Automatic stop search
    5 locking positions
    Safety antishock system
    Tilt: 10°
    Work position: 0°
    Fast with 1/4 turn rotation
    Wide with 10 different levels of intensity
    Distance between seat holes: 153×200 mm
    Distance between back-bars connection holes: 3 holes 40×40 mm, 4 holes 25×40 mm
    159 mm forward pivot point
    Art.980-51 Back-bars connection: 3 holes 24×30 mm, 4 holes 15×67 mm




    • EN1335-2:2009 par. 4.1
    • EN1335-2:2009 AC:2009 par. 7.2.1
    • EN1335-2:2009 AC:2009 par. 7.2.2
    • EN1335-3:2009 AC:2009 par. 7.3.1
    • ANSI-BIFMA X5.1-2011/5
    • ANSI-BIFMA X5.1-2011/6
    • ANSI-BIFMA X5.1-2011/10
    • BS 5459-2/00 par. A.5.5
    • ZEK 01.4-8
    • 1907/2006/EC (REACH)


  1. Turn the lever for chair height adjustment
  2. Turn the handwheel to lock/unlock the backrest swing
  3. Turn the handle from the resting position to adjust swing intensity

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