Durable, heavy-duty containers for a variety of uses. All-plastic, professional-grade construction will not rust, chip or peel; resists dents. Strong, snap-on lids are available for secure, stable stacking. Reinforced rims add strength and durability. Built-in handles allow easy, non-slip lifting and anti-jam nesting. Double-ribbed base increases stability and dragging capacity. Gray, White and Yellow are USDA Meat and Poultry Equipment Group Listed and assist in complying with HACCP guidelines. Certified to NSF Standard #2 (gray, white, yellow, blue and black) and Standard #21 (gray, white, yellow, blue, red and black).