This item is described as being sturdy and "commercial" grade, but is, in reality, the flimsiest pot lid I ever saw. Way too light to really "put a lid" on a pot with boiling liquid. Manufacturer describes it as virtually indestructible, but I'm sure it would dent if dropped on the floor. I returned the item and actually found an Anolon glass lid of the same size, which is truly heavy and allows to watch what you're boiling.