Economy Workbench Chair, Optional Hard Floor Casters Shown with optional Hard Floor Casters (SAF5132), sold separately. Pneumatically adjusts 8" up or down while seated. Overall height adjusts 19" to 27". Contoured, black polyurethane self-skinning foam seat and back wont crack or peel with wear. Large nylon reinforced base with 20" diameter chrome-plated adjustable footring and 2" high-impact nylon-reinforced glides. Backrest adjusts 3" in height and depth. Seat: 16-1/4w x 16-1/4d. Back: 14-1/2w x 9h. Shpg. wt. 30 lbs. Assembly required. WEIGHT: 28 lbs. SOLD AS: Each STOCK NUMBER: 5110