Industrial Seating Desk Height Conductive Chair, Nylon Base, Adjustable 17-22". Options Include Armrests, 2 and 3 Lever Seat Control and more. - ESD Series 45 P47-FC SERIES 45 Waterfall Front 300 pound capacity 18" wide, 17" deep seat 2.5" double density foam 14" high back Rubber Bumper standard. 15 Year Warranty.