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Rock & Swivel adjustable height 27" chair base

Style # SKU M9403G-3318

Tipping over resistant 27” wide heavy stable metal chair base.
Chrome Gas cylinder raises or lowers chair seat virtually3”.
4 leg base is extra strong and includes additional strength leg supports. 
Office Rock & Swivel mechanism with 6"X10" attaching slotted chair holes during check out.

Rubber floor glides on each leg prevent flooring damage.


Rock and Swivel 3318G: Floor to top of mechanism with casters, base, gas cylinder, and swivel tilt mechanism-Low is 12 1/4", high-14 3/4".
Mounting holes are slotted making installation easier and are 6" wide X 10" front to back apart.

Taller heights are available.

Insert without tools the Chrome gas cylinder into the center hole of the 4 leg chair base. Just sitting in the chair more than once will make it extremely tight and difficult to remove without tools.

A mounting board may be necessary to install SKU 3318 or any other size mechanism.