Businesses in the corrugated paper category manufacture, convert or supply paperboard made with a fluted inner layer between flat sheets. This structure gives the material strength and cushioning while keeping it relatively light. It is commonly used to protect goods in storage and transit, and can be made in different grades, flute profiles and sheet sizes to suit the weight and handling needs of a product. Typical products include corrugated sheets, rolls, pads, dividers, edge protectors and cardboard boxes, including standard cartons and packaging made to specified dimensions. Suppliers may also provide cutting, printing, slotting, folding and die-cutting services, as well as advice on selecting packaging for particular goods. Customers range from manufacturers and retailers to removals firms and households needing protective materials. Some businesses focus on bulk supply to other packaging companies, while others provide finished packaging directly to end users.