How does pneumatic seat height adjustment work on an ergonomic chair?

A pneumatic gas cylinder is what lets you raise and lower your seat with just a lever — no effort required, just smooth up-and-down adjustment across a 4"–5" range. Standard, tall, and short cylinder options can extend that range even further for very tall or very short users. The cylinder is the most commonly replaced component after 5–10 years, but replacements are widely available and usually cost a fraction of a new chair. FindOfficeFurniture.com can advise on compatible replacement cylinders for specific models — call 888-719-4960.