Class 100 Clean Room Industrial Gray Polyurethane Medium Bench Height Chair in Chrome is adjustable from 20.5-28 inches from the top of the seat to the floor and features ergonomic adjustments including seat height and locking back tilt, built in handle for ease of movement, locking seat tilt, chrome adjustable foot ring, and cast-aluminum base with stationary, non-marring glides suitable for hard floors in chemical, soil, and puncture resistant polyurethane.