Store important items securely with these double-wall boxes. The extra-strong corrugated cardboard construction doubles the boxes' strength, preventing tears and holes, while the stronger material makes it easier to transport or ship heavy items without worrying over damage and destruction. These SI Products double-wall boxes ship flat, making it easy to store the boxes in buildings that lack a lot of storage space. Shipping boxes help ensure items are protected during shipping. Overall Dimensions: 24"L 18"W 24"H. Heavy-duty construction provides greater protection and stacking strength. Capacity: 6 cu. ft. Rectangular shipping box with double-wall construction.corrugated shipping boxes. Sold as 10 per bundle. Manufactured from heavy-duty 275#DW/ECT-48 kraft corrugated. Pack up office documents and items securely with these SI Products double-wall boxes.