3 ply or 5 PLY Corrugated boxes are durable, lightweight packaging containers made of a multi-layered paper-based material consisting of at least one wavy, fluted middle layer sandwiched between flat "liner" sheets. This structure provides strength, rigidity, and cushioning to protect products during shipping and storage. They are highly versatile, cost-effective, and sustainable, as they can be made from recycled materials and are fully recyclable.