A 3-ply corrugated box refers to a type of packaging box that is constructed using three layers of corrugated cardboard material. Corrugated cardboard is made up of a fluted layer sandwiched between two flat linerboard layers. This construction provides strength, durability, and cushioning properties to the box. 3 Ply Corrugated Box is primarily made from corrugated cardboard, which is composed of recycled paper or virgin pulp. It is a lightweight and eco-friendly packaging material that offers structural integrity and protection to the contents inside.