The TaskMaster EconoMahogany Industrial ChairWave tube extension allows for a taller height. It adjusts up or down pneumatically while seated. The backrest adjusts 3 inches in height and depth. The large base ensures stability. The wide, angled, textured footrest provides secure footing and ergonomically correct leg positioning. Recommended Applications: Publishing, Warehouse, and Industrial: Stools; Seat/Back Color: Black. Global Product Type: Chairs/Stools/Newsroom Recommended Applications: Newsroom, Warehouse & Industrial - Stools Seat/Back Color: Black Arms Included: Non-Pneumatic Seat Height Adjustment: Yes Back Height Adjustment: Yes Seat Glide Mechanism: Yes Dual Clutch Posture Control: Yes Overall Height Minimum: 17" Overall Height Maximum: 35" Seat Width Maximum: 16 1/4" Seat Depth Maximum: 1 6 1/4" Seat Height Minimum: 17" Seat Height Maximum: 35" Seat Material: Self-Skinning Polyurethane Foam Back Width Maximum: 14 1/2" Back Height Maximum: 9" Back Material: Self-Skinning Polyurethane Foam Base Color: Black Base Material: Tubular Steel Caster/Glides/Wheel: Glides. Weight Capacity (Text): Holds up to 250 lbs. Series Name: Safco TaskMaster Series Quantity: 1 Each Compliance Standards: Meets or exceeds ANSI/BIFMA Standards Pre-Consumer Recycled Content Pre-Consumer Recycled Content Percent: 0% Post-Consumer Recycled Content Percent: 0% Total Recycled Content Percent: 0%