Vertical dividers are extremely useful for storing many different large, flat objects—cutting boards, cookie sheets, muffin tins, platters, baking pans, pie dishes, large lids, and even cooling racks. Many units are adjustable, allowing you to reconfigure the dividers in whatever manner is most efficient.
These vertical dividers are often placed in the upper portion of tall cabinetry, such as an oven cabinet, pantry or deep refrigerator upper. They can also be used in narrow base cabinets from 9 to 12 inches wide, where a drawer stack is not practical.
Source: The Spruce