FEATURES REINFORCED SHELVES WITH WELDED SURFACE RIBS FOR ADDED STRENGTH OPEN DESIGN TO MAXIMIZE AIR AND LIGHT CIRCULATION AND MINIMIZE DUST ACCUMULATION INCLUDES 4 SHELVES, 2 POSTS, SNAP-ON SLEEVES AND S-HOOKS TO JOIN UNITS SHELVES EASILY ADJUST WITHOUT TOOLS AT 1" INCREMENTS NSF APPROVED IN DRY APPLICATION AND USAGE CHROME PLATED FINISH IS ATTRACTIVE ENOUGH FOR RETAIL DISPLAY, BUT WITHSTANDS WAREHOUSE CONDITIONS AS WELL.