Heavy Duty Double Wall Corrugated Boxes

Double wall corrugated boxes typically range from about 1/4 inch to 3/8 inch thick, depending on the flute combination used. Our double wall boxes use 275# Test Kraft material with an ECT-44 rating, providing the added thickness and strength needed for heavy-duty stacking and shipping applications.

Our 275# Test Kraft double wall boxes with an ECT-44 rating are engineered to support significantly higher stacking loads than single-wall boxes, making them suitable for heavy machinery parts, bulk industrial shipments, and stacked pallet storage. Exact capacity depends on box dimensions and how weight is distributed.

We offer double wall boxes in a range of sizes, including 24x24x24 inch cube boxes, 36x6x6 inch long and narrow boxes, 18x18x28 inch dish packs, and 28x22x14 inch standard boxes. Custom sizing is also available upon request for specialized applications.

Double wall boxes use two layers of corrugated medium instead of one, roughly doubling wall thickness and significantly increasing edge crush test (ECT) ratings. This makes them better suited for heavier items, longer transit times, and multi-box stacking, while single-wall boxes are typically reserved for lighter, shorter-distance shipments.

Minimum orders start at just 1 bundle, with bundle quantities ranging from 3 to 25 boxes depending on size and style. This low minimum makes it easy to test a box style before committing to volume orders, while custom and bulk pricing is available for recurring needs.

All boxes ship flat-packed to save storage space and reduce shipping costs. They're designed for quick, tool-free assembly on-site, forming a sturdy container ready for packing within seconds — ideal for warehouses, distribution centers, and moving operations.