bExact – Prime Extra High Back

The Prime.

Designed and manufactured in Melbourne Australia, the Prime has been developed to meet the growing demands of the ‘Agile Working Environment’.

Finally, a chair where one size can fit all…

An elite concept that marvels in both its aesthetics and functionality is what sets the Prime apart from all others.

Available with a variety of control mechanisms, the Prime features our unique and world-first adjustable posture support system. Sizes are available in Low, High & Extra High back models, and these can be modified with optional seat sizes and upgrades to suit the various shapes and needs of each user.

The Prime features a sleek upholstery style that suits the clean lines of the modern workplace.

Back Dimensions

  • Extra High Back – H 780mm x W 400mm

Prime Extra High Back Data Sheet

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Weight Rating

  • Auto Self Weighted Mechanism: 150 Kg
  • HD Donati Mechanism: 135 Kg
  • 3 Lever Ergo Mechanism: 130 Kg


  • 7 Years – 8 hour usage per day, 5 days per week
  • 3 Years – 24/7 Extended Usage

Seat Height Range

*Standard Gas Lift: 100/43
*Lower Gas Lift: 80/43
*Higher Gas Lift: 140/43