9 x 6 x 4 Brown Corrugated Boxes Shipping and Storage Boxes. Bundle of 25 crush-resistant 32ECT-rated boxes for stacking and organizing. Pack allitems for extra cushioning support for safety while transporting goods to customers. Measure odd-shaped goods to get just the right size boxes without adding costs of extra material or shipping costs. These 32 ECT-rated single wall boxes are easily sealed with fold-over flaps to be secured by tape (sold separately). Pack all types of items for extra cushioning support for safety during transporting goods to customers Measure odd-shaped goods to get just the right size boxes without adding costs of extra material or shipping costs These 32 ECT-rated single wall boxes are easily sealed with fold-over flaps to be secured by tape (sold separately)