Culinary Basics can withstand temperatures up to 230°F when used under heat lamps, in warming units and microwaves. The clear lid is designed using anti-fog technology with a vented design that allows steam to dissipate. It helps keeps fried foods crisp and offers clear visibility of your items to assure order accuracy. Stacking will not block the vents. Secure snap closure ensures freshness and eliminates spills when transporting. The crack and cut-resistant polypropylene base makes it convenient for your customers to eat right out of the container.