OFM Armless Swivel Task Chair, Silver Frame: * Gas lift height adjustment * Casters included * Polypropylene seat and back * 16 gauge tubular steel frame * Assembly required * Seat size: 18"W x 19.5"D * Back size: 18.75"W x 9"H * Seat height: 16"-19.5" * Overall height: 29"-32.75" * Overall width: 25.5" * Overall depth: 25.5" * Base size: 5 star - 25.5" * 250 lb weight capacity * Accepts DK-2 drafting kit for conversion into a stool * Meets or exceeds ANSI/BIFMA safety standards * Model# 200