Made of durable 18-8 stainless steel. Measures 12.5-inches by 12.5-inches by 2.5-inches - conveniently fits pans from 7-inches to 12-inches. Attractive heavy duty durable stainless steel lid with tempered glass insert that fits multiple sizes of frying, stockpots, and sauce pans. Oven safe to 425 degrees Fahrenheit. Dishwasher safe.