13' x 18' Perforated Sheet Pans Set of (12) Half Sheet Pans Perforated Design Promotes Perfect Browning and Crisping Constructed of Commercial-Grade 3003 Aluminum Closed Bead Design with a Wire-Reinforced Rim Designed to Withstand Daily Use in Commercial Restaurants and Bakeries Pans Resist Warping and Maintain Shape Under High Heat and Frequent Use Double-Row Perforations Help Prevent Moisture Build-Up Perfect for Roasting Vegetables and Baking Cookies, Pastries, Bread and Pizza Stackable Design with Tapered Edges Allow Pans to be Stacked Efficiently to Maximize Storage Hand Wash Only and Dry Thoroughly After Washing