Duo Back® is the office chair which offers you extraordinary lasting seated comfort due to the flexible dual backrest whose parts move individually of each other. Duo Back® backrest has been proven to provide up to 50% less pressure on the spinal column.
Due to the split back rest that moves flexibly in all directions, this principle has set ergonomic standards for years.
Due to flexible backrest connectors and synchro tilt mechanism this chair optimally supports individual movements. You are seated excellently and your body is perfectly supported.
The dual backrests that make the Duo Back® so unique, conform optimally to the shape of thorax. The dual backrests not only support in the forward and backward motion but also in the side-to-side movement.
The padded elbow rests, are so cleverly designed that they can be adjusted to fit any body size. The padded support area makes it possible to sit on this chair and work without putting pressure on the elbows.
Seat can be adjusted forward and backward for effective user personalisation.
The weight tension can be adjusted to meet the needs of different user weights. This ensures optimal support.
The backrest pads can be adjusted so the back is supported appropriately.
Adjustment ensures the elbows are at the correct height relative to the shoulders.
Allows you to tilt forward up to 11 degree, re-positioning the pelvis to obtain optimal seating position.
* With A13 armrests
Sometimes, over time, the gas stem can become a little stiff when trying to adjust the height. A quick and easy fix for this is using WD-40 or Vaseline. Apply a light layer of grease to the gas stem, then try adjusting the gas stem 3-4 times. The gas stem should now adjust easily.
On the right side of the seat there is a small button. While seated, press this adjusting button and lean against the backrest. Then move the seat forward against the gas-spring pressure and release the button when the seat reaches the desired position.
On the left side, under the seat, is a handle that you can press upwards while seated. This activates the tilt mechanism. The backrest tension can be infinitely adjusted to your bodyweight via the crank on the right.
To adjust the backrest height on your Grahl Duo Back®, release the lower hand wheel on the back bar, while you are behind the Grahl Duo Back®. Adjust the desired height and fix the position by tightening the hand wheel. To adjust the width of the backrest connectors, turn the top hand wheel. Fix the desired width by turning this hand wheel to the left or to the right.
The height of the armrests can be adjusted by the buttons on the outer side of the armrest upright. The width is adjustable by the eccentric lever beneath the seat. The armrest pads are depth adjustable without pressing a button.
You can achieve additional adjustment of the width by rotating the armrest pads for particularly wide or narrow distance between the armrest pads. Press the button on the inner side while you turn the armrest pads.
Please give our customer services team a call on +44 (0) 345 345 0010.