- Seat slide for optimal leg support;
- Height adjustable backrest;
- Adjustable height seat;
- Locking tilt mechanism to increase movement of the user.
The three lever versions (Extend 200 and 220) have a separate adjustable backrest angle.
 |  | | | |
| Model | RH Extend 100 2 lever | RH Extend 120 2 lever | RH Extend 200 3 lever | RH Extend 220 3 lever |
| Seat Depth | 470 mm | 470 | 470mm | 470 |
| Seat Width | 460 | 460 | 460 | 460 |
| Back height | 510 | 620 | 510 | 620 |
| Back Width | 440 | 440 | 440 | 440 |