Heavy-duty construction throughout; legs, stringers, shelves, backboards and end pieces are 14-gauge. Steel tops are 12-gauge. Channel legs available with slides for uneven floors and casters for mobile benches. Steel parts standard in gray finish. Tops stocked in plastic (non-glare white), conductive (anti-static), 12-gauge steel wood. Ships knocked down. Bench height adjusts from 30¾"-34¾". Adjustable lengths available (4' and 6') Please call for pricing.