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RH Extend - High Back

RH Extend High Back

The RH Extend is designed to give the best possible support, whilst encouraging dynamic sitting. As standard, the chair comes with a high back rest, aluminium base and castors for carpeted floors. The 220 model additionally features an independent seat-tilt/back-angle adjustment, so these can be set precisely according to the user's needs. Options include pivot-top arm rests and a neck support. Either model is available in an ESD variant, if required.


To benefit fully from a specialist chair, you will almost certainly need training to understand the best postures and habits. We recommend that you purchase training and setup when buying this product. This one-off charge (however many units you buy) includes assembly, configuration, full user training and removal of all waste packaging.

  • Outstanding specification for the price.
  • Ingenious synchro/slide mechanism (Model 120) for optimum support in all positions.
  • The 120 model has a synchro/slide mechanism for optimum support.
  • The 220 model features independent back and seat adjustment.
  • Integrated, easy-access controls and infinite-lock rocking action.
  • Supplied with high back as illustrated (optional armrests and neckrest).
  • Also available in medium back, click here to view the RH Extend Medium Back.
  • These chairs are made to order and delivery may take up to 2 weeks (we do not charge your credit card until we are ready to despatch).
  • Winner of the Fira Ergonomics Excellence Award.

See Also:


Please look at our comprehensive list of Chair Features & Benefits

 Feature   Availability
  Synchronous Mechanism Standard
  Asynchronous Mechanism No
  Free Float (Rocking) Feature Standard
  Independent Seat Tilt Adjustment No
  Independent Back Angle Adjustment No
  Seat Slide Standard
  Adjustable Lumbar Support No
  Pelvic Support No
  Height Adjustable Arm Rests Option
  Width Adjustable Arm Rests Option
  Depth Adjustable Arm Rests Option
  Independently Adjustable Head Rest No
  Independently Adjustable Neck Rest Option
  Suitable for Clean Room No
  ESD (Anti Static) No
  Suitable for 24 Hour Use Option
Part Number: RH-EXHIGH
Part Number RH-EXHIGH
Type (Low, Medium, High Back, Split Seat/Back) High Back
Weight (Packed) (kg) 33
Weight (Un-Packed) (kg) 28
Seat Height Adjustment (Y/N/O) Y
Back Height Adjustment (Y/N/O) Y
Maximum Weight Capacity 133kg - 21 Stone
A - Back Height (mm) 620
B - Lumbar Height (mm) NA
(B) - Pelvic Support (mm) NA
C - Chair Arm Height (mm) 215-295
D - Seat Depth (mm) 430-490
E - Seat Height (mm) 400-510
F - Seat Width (mm) 460
CodeDescriptionPrice Inc VATPrice Ex VATChoose Fabric ColourTraining and SetupQty
RH-EXHIGHRH Extend 120 High Back (Without Arm & Neck Rests)£748.80£624.00
RH-EXTH2RH Extend 220 High Back (Without Arm & Neck Rests)£884.40£737.00
RH-MVHEADRH Extend Neckrest£117.60£98.00
RH-8AS1RH Arm Rests - pivot tops - pair (215-295mm)£110.40£92.00
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