COMMERCIAL QUALITY: Made of durable 13 gauge aluminum, these professional-weight baking sheet pan features an open rim and is heavier in gauge than that of standard home bakeware PERFECT HEAT DISTRIBUTION: The durable, aluminum construction bakes evenly and browns uniformly, while the light color prevents overbrowning OPEN BEAD: Baked goods rise and bake evenly due to aluminums superior heat conductivity and open beads pans are NSF listed. SPACE SAVING DESIGN: The stackable tapered design is ideal for space saving, and can easily fit in standard baker's racks. HAND WASH ONLY: To preserve quality and keep your product in best working order, this item should only be hand-washed and sanitized. This 18" x 13" half-size aluminum sheet pan is made out of 3003 high-quality aluminum. The clean edge provides easy, sanitary cleaning, a necessity for every professional kitchen. The pan is ideal for baking rolls, cookies, brownies, buns or for any type of baking use. It can also be used for storage applications in the freezer or in a commercial kitchen.