All-plastic, professional-grade construction will not rust, chip or peel and resists dents. 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. USDA Meat & Poultry Equipment Group Listed, assists in complying with HACCP guidelines. Certified to NSF Std. #2 and Std. #21. CSFM approved when used as container/lid combo (2632/2637, 2643/2647, 2655/2657; lids and dollies sold separately).