Hawkins Chair Office Depot Parts Replacement Pneumatic Gas Cylinder Lift 3.9" Heavy duty pneumatic gas cylinder lift for office chair height adjustment Typically installed on chairs rated up to 350 lb. 3.9” stroke (seat travel from lowest to highest settings) Gas spring diameter 1.1” with Industry standard 17-4 taper Support column is 50mm (1.96") in diameter Dimensions when fully compressed: 9.85”. Fully extended: 13.75” Under base extension: 1.4" Class 4 with 450n (standard cylinders are class 3 rated 250lbs) Exceeds BIFMA standards and DIN 4550 Cylinder shipped completely assembled ready for use
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