OT1671 Features: Breathable light air grid back and 2-layer mesh seat Built-in lumbar support One touch pneumatic seat height adjustment Deluxe 2-to-1 synchro tilt control with 3-position Lock and anti-kickback Adjustable tilt tension control Adjustable PU padded arms Dual wheel carpet casters Arms Max Inside: 19.75'' Arms to Floor Min: 25.5'' Arms to Seat Min: 6.5'' Seat Height Min: 18.5'' Seat Height Max: 23'' Seat Travel: 4.5'' Color/Finish: Heavy duty platinum finish base Dimensions: Seat Size: 20'' W x 19.5'' D x 3'' T Back Size:. 20'' W x 18'' H Overall Dimensions: 41.75'' H x 28'' W x 24'' D