| EAN: | 4779055180345 | 
| Specification/Model | CH-519B | 
| Seat  high   adjustable from xxx to xxx mm | 429-523 (100/5#black gas lift) | 
| Seat depth xxx mm ±   30 mm | 430±10 | 
| Seat width xxx mm ±   30 mm | 505±10 | 
| Chair with backrest   and armrests. | Yes | 
| The armrests of the   chair are adjustable in height and covered with padded polyurethane. | No | 
| Chair on castors. The   castors of the chair are suitable for hard surfaces (rubberised). | Yes | 
| Height adjustment of   the chair by pneumatic lifting mechanism. | Yes | 
| The bridge mechanism   of the chair seat locks the working position, the synchronous mechanism locks   the tilt of the chair in xxx positions. | 1 position | 
| The force of the   chair's swivel stiffness is set with a special knob according to the weight   of the person. | Yes | 
| The star (with five   castors) and the armrests of the chair made of rigid plastic, plastic-coated   metal or other equivalent material. | Yes | 
| Chair seat and   backrest padded and upholstered in a tapestry with a resistance to abrasion   of at least 100 000 cycles on the Martindale scale. | Yes |