Facing
A facing is one visible front position occupied by a product on a shelf. Giving an item more facings can improve its visibility and shelf capacity, but reduces the space available for other products.
Facings are counted across the visible width of a display rather than by total stock depth. One facing can have several units stored behind it. A product with more facings may attract attention and need less frequent shelf replenishment, but increasing its space can reduce the range or capacity available to neighbouring products.
For example, four packs displayed side by side create four facings, even if each row is five packs deep. A planogram can prescribe that allocation. Counting facings and counting saleable stock answer different questions, so the display position alone does not establish how many units are available.