4mm white corriboard sheet is an extruded opaque, twin-wall polypropylene board that is lightweight and used for multi-purpose applications, including floor and wall protection, packaging, sign making and other event signage. The sheet can be printed directly or is ideal for applying plotter graphics. It is a lightweight, durable, and water-resistant material that can be easily cut, folded, and printed on. As a result, corriboard is often used as an alternative to traditional materials such as cardboard or wood for temporary or semi-permanent applications.