Vtg PYREX 232 clear 2qt Casserole Lasagna Baking pan

* Very nice pre-loved condition * Chip free - Crack free - No fleabites * All capital letters * These are the older pie dishes, all CAPITOL letters. Made with soda-lime, tempered, and borosilicate. Borosilicate glass includes boron trioxide, which has a low thermal expansion. This suggests that unlike normal glass, it won't break when exposed to major temperature shifts such as taking a dish from a fridge to an oven. This is thanks to boron trioxide, the element that makes glass resistant to major temperature changes.