DW 9120AL Air Lift Drum Throne Air Lift Thrones are the next evolution in DW throne technology. Combining the workhorse features of DWs 9000 line of thrones, Air Lift thrones also include a sturdier quad leg folding base, and effortless pneumatic height adjustment. The 9120AL design includes an optional backrest sold separately for those players that desire more support, while the 9100AL incorporates a more traditional seat top.