Metro Super Erecta Industrial Wire Shelving Metroseal-3 Post are fitted with adjustable leveling bolts to compensate for uneven surfaces. Posts are grooved at 1" increments.  Finish:  Metroseal-3 is corrosion resistant finish for wet or high humidity environments with a 12 year warranty against rust and corrosion.  Microban antimicrobial is built into the finish to keep the product cleaner between cleanings.