Flutes come in many different sizes. The standard sizes are A, B, C and E. A is the largest, B is smaller, C is in between an A and B in size. E is the smallest standard size. Technology is helping the industry develop new flutes. Miniature flutes (F, G, and others) are becoming very popular.

Flutes make corrugated board strong and rigid. When standing on end, the columns or flutes are able to support a great deal of weight. The flutes also serve as a protector, insulator and cushioning device.

Different flute sizes can be combined in one piece of corrugated board to manipulate compression strength and the total thickness of the board. For example, in a piece of double wallboard, one layer might be B flute while the other layer C flute. This flexibility gives our Design Engineers even more ways to enhance or protect your product.