Desk height chair w/ task control to regulate seat height and backrest angle, black vinyl, seat 20.5in wide set to 18in depth, backrest 17.5in w x 15in h w/ 3in adjustment range, no arms, 28.7in diameter solid height
High bench height chair w/weight-activated control, synchronous seat & backrest, black vinyl, seat 20.5in w w/16.4-18.9in adj depth; backrest 17.5in w x 19.5in h w/3in adj range, 3-way arms, 28.7in dia solid cast alu
High bench height chair, backrest angle; black vinyl, seat 20.5in wide set to 18in depth, backrest 17.5in w x 15in h w/ 3in adj range, no arms, 22in dia. Aluminum foot ring 28.7in dia, seat height 21.5-34in; ISO 5
Medium bench height chair with task control to regulate seat height, backrest angle; black vinyl, seat 20.5in wide set to 18in depth, backrest 17.5in w x 15in h with 3in adj range, no arms, 22in dia. Aluminum foot ring 28.7in dia seat height 19-28.5in; ISO 8 rated