What is a primary feature of gravity flow racks?

Gravity flow racks are designed to facilitate the efficient and streamlined movement of products within a storage or warehouse environment. A primary feature of these racks is their ability to automatically feed product to the packer. This is accomplished through a sloped design that utilizes gravity to move items from the back of the rack to the front, where they are easily accessible for packing or order fulfillment.

This design not only improves workflow but also reduces the need for manual handling and intervention, allowing for a smoother and faster picking process. As items are taken from the front, new stock is introduced from the rear, ensuring a consistent and organized replenishment cycle. This automatic feeding mechanism significantly enhances operational efficiency, making gravity flow racks a favored choice in dynamic inventory systems.

The other options do not align with the primary function of gravity flow racks as effectively. For instance, while these racks may occasionally require adjustments based on inventory changes, their main feature is not about continuous adjustment. They do not need an external power source to function, as they operate purely on the principle of gravity. Additionally, rather than reducing efficiency, gravity flow racks are specifically designed to enhance it by optimizing the flow of products.