A corrugated box, often referred to simply as a cardboard box, is a versatile packaging container made from corrugated fiberboard—a material composed of paperboard layers sandwiched between fluted cardboard. This unique construction provides strength, durability, and cushioning properties, making corrugated boxes ideal for shipping, storing, and protecting a wide range of goods.

The structure of a corrugated box typically consists of an outer layer (called linerboard) and an inner layer (also linerboard) with a rippled or fluted layer of corrugated material sandwiched between them. This corrugated layer adds strength and rigidity to the box, enhancing its ability to withstand stacking, compression, and impacts during handling and transportation.

Corrugated boxes come in various shapes and sizes to accommodate different products and shipping needs. They can be custom-designed with features such as handles, partitions, inserts, or printing for branding and labeling purposes. Additionally, corrugated boxes may be manufactured with different grades of fiberboard to meet specific requirements for strength, moisture resistance, or recyclability.