Our 12 1/2 x 12 1/2 x 6-4-2 Multi-Depth boxes offer the benefits of having many box sizes in your inventory to suit your various packaging needs and save warehouse space. Box sides are scored to multiple depths to allow height adjustment for a perfect fit. Our 12.5'' x 12.5'' Multi-Depth style boxes adjust to the heights of 6", 4" and 2". These 12.5" x 12.5" shipping boxes meet requirements for 200#-C/ECT-32-C corrugated. Our multi-depth corrugated containers are great for shipping or storing paper or any other files.