Our Extra Heavy Duty Large Moving Boxes (18" x 18" x 27") are made of sturdy doublewall construction and come packed in a bundle of 8, 12, 16 and 20 moving boxes. Use these moving boxes for heavier items requiring the extra strength provided by double-thick cardboard like plates, glasses, vases and collectables. These moving boxes are perfect for packing your kitchen. Wrap your fragile items in our air bubble cushioning or foam wraps to protect your fragile items during the move.