The DW Drums 9100AL Air Lift Throne combines the workhorse featurebrews of DW's 9000 series thrones with new innovative features. Air Lift thrones feature the same special foam combination that provides stability and comfort, but is also equipped with a sturdier quad-leg folding base and pneumatic height adjustment for quick and easy adjustment in seconds. The 9100AL has a minimum height of 20'' and a maximum height of 27.5''.