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I use two different sizes of these covers. Corning Ware is so difficult / clumsy / awkward to stack in refrigerator; These lids take a bit of effort to get on snuggly but then can stack multiple Corning ware on top of one another ... very sturdy and efficient for neat refrigerator.
You just can't go wrong with CorningWare and these lids are perfect for storing in the refrigerator they're sturdy enough to seven others bowl on top and they keep the stuff inside fresh I will be ordering more.
I needed lids anyway, but these allow me to stack the containers for storage. Also, they're microwaveable. They are not designed for some o the older models (the ones with the narrower handles), but I managed to finagle them on.
This product is the exact material. size and color of my original set of dishes. Of course I am exceptionly please. Reason being, that at the time of placing my order, I was somewhat apprehensive, as to what I was ordering would not match my remainder of dishes. I was plesantly surprised, THEY DID.