At Chicago Metallic, we believe that serious baking requires serious bakeware. That's why we've been crafting innovative equipment, for professionals and serious home bakers, for over 100 years. We've built a global reputation one kitchen at a time. People know our products are built for durability and can be depended on year after year. We're proud to three distinct lines of premium bakeware plus stylish, innovative specialty bakeware and baking essentials. The Chicago Metallic Professional line of bakeware makes cooking and baking a delight. The non-stick surface easily releases each recipe and makes clean-up effortless. It's the preferred choice of bakers who understand quality and design, but also want professional-grade durability. This set of Cookie Sheets/Jelly Roll Pans are i for sweet treats like jelly rolls, bars, and cookies but can also be used to make one-sheet-pan meals, roast vegetables, reheat leftovers. The Baking Rack is for cooking bacon in the oven or cooling freshly baked cookies. These pans are made from heavy-weight aluminized steel for superior heat conduction and even baking. They features an easy release, silicone based, non-stick coating for ease of baking and cleanup. Non-stick 3-piece set includes (2) cookie/jelly roll pans and 1 cooling rack pans measure 16 by 12 by 2-Inch, rack measures 16-1/2 by 11-1/2-Inch; half sheet pan. Outside measurements of the baking sheets are 17.75-inch-by-12.9-inch-by-1-incce and the bottom of the pan measures 16.75-inch-by-12-inch. Oven safe to 450°F / 232°C; not intended to be used under the broiler. Sharp-edged utensils and knives should not be used.