RH Logic 300 Medium Back Black Office Chair (with neckrest)
The RH Logic 300 is an exceptional ergonomic office chair designed to provide lasting comfort, improved posture, and increased productivity. Inspired by Scandinavian design, it blends precise adjustability with durable construction making it a dependable choice for demanding work environments and extended periods of sitting.
Featuring a medium height backrest, inflatable lumbar support, seat depth adjustmentand neckrest. The RH Logic 300 enables you to tailor your seating position to suit your body and work habits. It encourages active sitting, helping to minimise fatigue and keep you focused throughout the day.
Whether you're based in a traditional office, hybrid workspace, or home office, the RH Logic 300 delivers reliable ergonomic support that promotes wellbeing and helps prevent musculoskeletal discomfort.
- Tension controlled knee tilt mechanism providing responsive movement whilst maintaining support
- Highly adjustable chair to accommodate a wide range of needs
- Independent backrest angle adjustment
- Medium backrest shaped to fit the contours of the back
- Inflatable lumbar air cell
- Seat depth adjustment for optimal support under thigh
- Seat benefits from a flexed front edge
- Neckrest offering height, depth and angle adjustment
- Silver graphite aluminium base
- 10 year warranty with easy to replace parts for longevity
- Suitable for office environments
- Backrest length:
- 510 mm
- Backrest width (widest point):
- 447 mm
- Backrest adjustment:
- 519-598 mm
- Seat height (lowest):
- 410 mm
- Seat height (highest):
- 530 mm
- Seat pan width:
- 457 mm
- Seat pan length:
- 465 mm
- Seat pan (longest):
- 522 mm
- Seat pan (shortest):
- 394 mm
- Lumbar height:
- 170-255 mm
- Weight limit:
- 150 kg
- Seat tilt angle:
- 4.5° forward, 17.2° back
- Armrest (lowest):
- Not featured on this version
- Armrest (highest):
- Not featured on this version
- Armrest pad length:
- Not featured on this version
- Armrest pad width:
- Not featured on this version
- Armrest width adjustment:
- Not featured on this version
- Coccyx cut-out size (D x W):
- Not featured on this version
- Headrest/neckrest pad width:
- 240 mm
- Headrest/neckrest pad height:
- 90 mm
- Warranty:
- 10 years
Product Videos
Q: How do I adjust the back angle of my chair?
There is a row of 3 buttons on the right hand side of your Logic 300. Lift the middle button to adjust the backrest angle. Release the button to lock in place. The angle should be set so that your back makes contact with the backrest.
Q: My gas stem seems a little stiff – is this normal?
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.
Q: Can my seat slide forward?
There is a row of 3 buttons on the right hand side of your Logic 300. Lift the button furthest back on the right hand side. About four fingers width between the front edge of the seat and the hollow of the knee provides good blood circulation.
Q: I have lumbar support in my backrest, how do I adjust this?
On the back of the RH Logic backrest is a lumbar pump. Use the pump to inflate the lumbar support to optimal comfort. If you need to deflate your lumbar, simply push the button on the pump.
Q: My chair didn’t come with a neckrest – can I order one to add on myself?
You can retro-fit a neckrest to your Logic 300. You will need to check if you have the height adjustment cassette already. There is a little plastic cover over the neck rest hole on the very top of the back rest, pop this out and look inside. If it is white inside, the cassette is present and you are ready to order your neckrest. If it is not white inside you will need to buy and fit the neck rest cassette, which will need a technician appointment for fitting.
Q: How do I stop the rocking motion of my chair?
There is a tilt lock on the right hand side of your Logic 300 at the back. Turn the handle clockwise to lock the chair. To unlock, simply turn the handle anticlockwise.
If you want to adjust the tension of the tilt motion, use the front handle under the right hand side of your seat. Turn anticlockwise for firmer tension and clockwise to loosen the tension.
Q: We have hot-desking and I want to adjust the backrest height – how do I do this?
On the bottom right of your backrest there is a grey handle. Simply pull the handle upwards to adjust the height of your backrest. Once you are happy with the position, push the handle downwards.
Q: My seat has become worn over time – can I just swap a new one for the old one?
Yes, swapping the seat pad is simple. Once you receive your new seat pad, pull off the old worn seat pad. You will notice there are holes underneath around the edge of the seat pad. Simply align these to the seat shell, then push down on the edges to secure the seat pad into place.
Still having problems?
Please give our customer services team a call on +44 (0) 345 345 0010.
