Poly-Green Starter Units are designed with a powder coated green epoxy finish that handles temperature and moisture extremes well. Starter Unit includes 4 posts with leveling feet, 4 wire shelves and plastic snap on sleeves to secure shelves to posts. Reinforced shelves with welded surface ribs for added strength. Open design to maximize air and light circulation and minimize dust accumulation. Includes 4 posts, 4 shelves and snap on sleeves. Shelves easily adjust without tools at 1 increments. NSF approved for wet or dry use.