What is pneumatic seat height adjustment on an ergonomic chair?

Pneumatic seat height adjustment uses a compressed gas cylinder to smoothly raise and lower the seat. Standard cylinders provide 4"–5" of travel range. Pneumatic cylinders are the most common component to fail after 5–10 years but are easily and inexpensively replaced. Cylinders are available in standard, tall, and short heights. FindOfficeFurniture.com can advise on replacement cylinders for specific chair models — call 888-719-4960.