This baking mat from Focus Foodservice fits all standard half sized, 12 x 16.5"sheet pans. The mat is composed of a layer of food grade silicon over reinforced fiberglass to withstand temperatures up to 500 F. The mat is naturally non-stick so the need for grease, fats or oils are eliminated, which reduces costs. Use the smooth side of the mat is for baking cookies, danishes and pastries. The silicon mat is safe for use in the oven, microwave and freezer. The baking mats are packed individually.