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.