Proof your dough balls in our Eco Pie Rectangle White Plastic Pizza Dough Proofing Boxes. Designed with a reinforced rim, these dough boxes provide a secure grip to comfortably transport your ingredients. Equipped with a recessed bottom, these pizza proofing pans can be easily stacked on top of each other to act as lids and for space-saving storage. Made from heavy-duty plastic, these pizza dough boxes are dishwasher-safe for a quick and easy cleanup. These dough trays are safe, making them safe for storing all types of food. To control the temperature inside the box, seal these dough ball trays with our Eco Pie proofing box lids. These dough boxes measure 26 inches long by 18 inches wide by 3 inches tall. Sold in a 10 count box. Lids (SKU: RWT0865) are available and sold separately.