The shipping corrugated box is made of single wall C flute corrugated fibreboard. These 100% recyclable boxes promote environmental sustainability and responsibility to protect our mother nature. The boxes are engineered from high-grade white kraft paper in a semi-glossy finish that adds strength and durability to the boxes. ECT (edge crush test) value of the boxes is 25 which means the stacking strength of the boxes is ideal for shipping medium weight supplies. The shipping corrugated box comes in a standard shade of white color. The box is available in multiple sizes and weights.