Seville Classics UltraDurable Commercial-Grade 5-Tier NSF-Certified Steel Wire Shelving with Wheels, 36" W x 18" D x 72" H, Zinc Zinc Imported UltraDurable Commercial Grade - Industrial-strength steel construction for heavy-duty multipurpose storage. 3000 lbs. Capacity - Each shelf holds up to 600 lbs. in systems assembled with leveling feet. 3" Wheels + Leveling Feet - Includes smooth-rolling caster wheels (2 locking) for easy positioning in your kitchen, garage, warehouse, or storage area. UltraZinc Plating - Zinc plating provides necessary corrosion resistance in dry environments for reliable, long-term storage in restaurants and othre businesses. NSF-Certified Storage - Certified by the NSF to NSF/ANSI Standard 2 - Food Equipment for use in dry environments Industrial-strength steel wire construction Zinc plating provides necessary corrosion resistance in dry environments Includes 4 wheels (with 2 locking) and leveling feet Store up to 3000 lbs. per system on leveling feet. Store up to 500 lbs. per system on wheels.