HIGHBACK: 620W X 680D X 1095 – 1195H MM MEDIUMBACK: 620W X 680D X 1010 – 1110H MM LOWBACK: 620W X 680D X 895 – 995H MM VISITOR: 520W X 680D X 935H MM POLYPROPYLENE ROLLER CHAIR BASE TILTING MECHANISM WITH 1 LOCKING POSITION SURFACE: FABRIC OR PVC