This Wear-Ever heavy-duty half-size sheet pans furnished with tapered design for easy stacking. Made of impact-resistant 3000 series aluminum. This product features closed bead, non-stick finish. Sized to fit standard baker"s racks. Closed bead includes galvanized non-rusting rod for reinforcements. Concave bottoms flatten during heating for even heat distribution. Coated with non-stick coating for easy food release and cleaning. Perforated pans for oven broiling and baking. Measures 18-inch length by 13-inch width by 1-inch height.