Seville Classics UltraDurable Commercial-Grade 6-Tier NSF-Certified Steel Wire Shelving with Wheels, 48" W x 18" D x 72" H, UltraZinc UltraDurable Commercial Grade - Industrial-strength steel construction for heavy-duty multipurpose storage. 3600 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 other 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 NSF-certified for commercial, residential and office environments Includes 4 wheels (with 2 locking) and leveling feet Store up to <span class="a-text-bold">3600 lbs.</span> per system on<span class="a-text-bold"> leveling feet.</span> Store up to <span class="a-text-bold">500 lbs.</span> per system on<span class="a-text-bold"> wheels.</span>