Organize your space efficiently with the RW Base 4-Tier NSF Green Epoxy Shelving Unit. Constructed from durable steel, each storage shelf can hold up to 450 pounds. The green epoxy coating resists corrosion, making it perfect for humid areas like walk-in refrigerators or freezers. With vertical ribs, these shelves provide extra stability to these wire shelves to prevent tipping. The vented design of these NSF-certified shelving units promotes airflow and reduces dust buildup, maintaining freshness. Featuring posts and 32 split sleeves, this kit allows for adjustable shelf heights. Not to mention, the included casters enable easy mobility of the shelves. Each shelf measures 18 inches by 60 inches by 1.5 inches, while the posts are 74 inches tall. The casters are 5 inches in diameter. Each order includes 4 shelves, 4 posts, and 4 casters.