Ovenchef® Rectangular Roaster 4.2 Quart

Described as “shockingly sturdy bakeware” in This Old House magazine, this borosilicate tempered glass rectangular baker is designed to bake perfect casseroles, sweet desserts,  and so many others bubbling with family favorite flavors. Made in France with borosilicate tempered glass, the surface is so smooth that it cleans easily, even when food is baked onto the dish. Size: 15 X 9 7/8-Inches.

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. 

WHAT IS THE TEMPERING PROCESS?
After annealing, and after the temperature has been increased to approximately 1292°F, the glass is suddenly cooled down through air ventilation. This processing creates in the glass some controlled constraints which improve its resilience to mechanical stress and thermal shock resistance (sudden change in temperature). The tempering process increases the resilience of the whole glass and offers safety, convenience and durability while increasing the life span of products.