A complete range of roasters, casseroles and baking dishes, made in France with borosilicate tempered glass, to cover all oven cooking usages.WHY IS BOROSILICATE GLASS THE MOST APPROPRIATE FOR AN OVEN COOKING?It offers durability, resistance and ensures safe use at the same time. What makes the Ovenchef® borosilicate glass so heat-resistant is, on the one hand, its formula (a key ingredient, boron, is added to the conventional raw materials) and, on the other, the tempering process. It resists to extreme temperatures, from -40°F to +572°F.