The heavy-duty pneumatic gas cylinder in each ERA Office Chair helps users adjust the seat to the correct height. This height adjustment allows for users of different heights to find a comfortable seating position. With the pull of a lever, the chair height can be adjusted to fit the user's needs by activating the gas pressurized piston. The pneumatic cylinder has a clean black exterior and the interior piston is polished chrome. The cylinder is also fitted with a telescopic cover, which helps reduce the amount of dust and debris that gets into the piston, aiding in the longevity of the product. Each ERA Office Chair pneumatic gas cylinder is warranted for life.
ERA Pneumatic Cylinders are offered in three height ranges: The 2.5" Cylinder is Recommended for Users 5'4" or Below The 3.0" Cylinder is Standard and Perfect for Most Users The 3.5" Cylinder is Recommended for Users 6'2" or Above