Executive high-back chair offers high performance and comfort. Functions include asynchronous control, pneumatic seat-height adjustment from 16-7/8" to 19-3/8", seat-glide mechanism, back-height adjustment, 360-degree swivel, tilt and tilt tension. Asynchronous control includes three levers to modify the angle of back relative to the seat; tilt (free float or infinite locking within a fixed range); and forward tilt. Arms adjust in height and width. Outer back is upholstered. Executive high-back chair also offers a five-star base with casters for stability and mobility. Weight capacity is 300 lb. Seat size is 19" wide x 20" deep. Usable seat depth ranges from 17-5/8" to 19-5/8". Back measures 19" wide x 24-1/2" to 27-1/2" high. The distance between the arms is 16-7/8" to 19-3/8". Chair is certified by SCS to be in compliance with specific indoor air-quality emission requirements and meets or exceeds applicable ANSI/BIFMA standards. Chair is available in black frame only.