Aside OPTIONS Type: Stacking Seat Style: PB - un-upholstered outer back UB - upholstered outer back Arms: MA - metal arms Frame Finish: BK - black MS - metallic silver MT - medium tone Casters/Glides: SG - glide HG - glide with insert U4 - carpet caster U5 - hard/carpet c DS - 2” double wheel Available Fabrics BU MS MT