Square Seat Plate: Floor to top of square plate low is 14 3/4", high is 17 1/4". Gas cylinder is class 3 (better than class 2). Complete with larger chrome hood casters, 4 leg base. In stock.
Simply insert without tools the gas cylinder into the center hole of the 4 leg chair base. Just sitting in the chair several times will make extremely tight and require tools to remove.