Class 10 clean room vinyl high bench height chair is adjustable from 25.75-35.5 inches from the top of the seat to the floor and features manual back height and depth adjustments, chrome adjustable foot ring, and cast-aluminum base with chrome-hooded, dual-wheel, self-braking, non-marring casters suitable for hard floors in antibacterial/antifungal Borscht Supernova vinyl.