Dough Proofing Box with Cover Stackable Polypropylene, White 18" x 26" x 3" Made of tough injection molded ABS plastic with reinforced front and side edges The box stacks securely and easily on one another with or w/o the lid The dough balls rise very well with no "crust" to worry about Grate quality used in bakerys and food shops for proofing or to store pastry in the fridge Dishwasher safe, Dimensions: 18" x 26" x 3"