This Hi-Core corrugated sheet is useful for making signs, bus boards, free-standing displays, packaging, or for craft projects. It's much stronger than cardboard and is resistant to water, which makes it ideal for permanent or semi-permanent use. Each corrugated plastic sheet measures 32 sq ft, and you can cut it down to make multiple smaller signs or use it to cover large sections of a wall. This product is resistant to chemicals and rainwater and won't rust, rot, or warp. Besides signs, you can also use the board to create temporary moulds for resin and a host of other applications.