Physician Exam Stool with Manual Adjustment and Polished Aluminum Base Standard height adjustment: 19" to 24" Seat diameter: 16" Base diameter: 24" California 117 fire resistant foam 3/4" thick composite substrate with steel reinforcement plate Weight Capacity 300 lbs COM Requirements 1 yd 933 Options Back Rest (Order Ex. 933-B) 18 Polished Chrome Foot Rest (Order Ex. 933-F) Soft Wheel Casters or Glides (Please specify)