Class 10 clean room core industrial gray polyurethane medium bench height chair in chrome is adjustable from 19.5-27 inches from the top of the seat to the floor and features manual back height and back depth adjustments, built-in handle for ease of movement, chrome adjustable foot ring, and cast-aluminum base with chrome-hooded, dual-wheel, self-braking, non-marring casters suitable for hard floors in chemical, soil, and puncture resistant polyurethane.