5C or B – Light single flute cardboard used for light packaging requirements or for products that support themselves.
4C or B – Slightly stronger single flute cardboard used for packing paper/notes/pads, etc. Usually for products that self support.
3C or B – Most common board grade usually used for virtually any standard light weight packing.
3C or B Super – Medium strength board that is slightly stronger than the above 3C/B board and can also be used for frozen goods.
1C or B – Strong single flute carboard used mainly for products that need extra support when stacking.
1C or B Super – Super Strength Cardboard that is mainly used for frozen food products that are transported long distance.
3 BC – Twin Cushion cardboard used for Removal Boxes and products that need that little extra care when packaged or for bulky items that may need thicker board when transported.
1 BC – Twin Cushion cardboard with some of the highest grade board for Superior support and stack-ability. Primarily for items over 30KG.