The Thunder Group SLSPS4040C is a durable stock pot lid designed for professional kitchens. With a diameter of 16-1/2 inches and a thickness of 1/2 inch, it perfectly fits the SLSPS4040 and SLSBP4020 stock pots. Made from high-quality stainless steel, this lid is both dishwasher and oven safe, ensuring easy cleaning and versatility in cooking. Its heavy-duty construction guarantees long-lasting performance, making it an essential addition to your cookware collection. NSF certified for safety and sanitation, this lid meets the highest industry standards.