Culinary Classics can withstand temperatures up to 230℉ when used under heat lamps, in warming units, and in microwaves. The clear lid is designed with anti-fog technology, and is vented to allow steam to dissipate, keeping fried foods crisp and your product visible to assure order accuracy. Stacking will not block the vents. Secure snap closure ensures freshness and eliminates spills when transporting. The crack-resistant, cut-resistant polypropylene base allows your customers to eat right out of the container.