Traditional corner caps are basically the same as the traditional end caps. If you take an end cap and remove a third of the material from the center of the cap, you would have two corner caps. This concept uses a third less material than the end cap, but it requires four caps to package a product. If you have a larger and taller product, this concept should save you a considerable amount over the end cap design. This design is also used when the product size forces a bad yield causing poor usage of material. Since the caps are smaller, the chances of a better yield and sufficient material useage increases.