Carton flow racking is a dynamic storage system designed for efficient picking operations. It uses inclined roller tracks or wheeled beds that allow cartons, boxes bins, or totes to move advance within its lane upon removal of the first item. Operating on a first-in, first-out (FIFO) basis, it is commonly used in order fulfillment centers, distribution warehouses, and assembly lines.
What problem does it solve?
Features
Custom Rollers
Key Factors when Designing

Clear Height
One factor in determining how high we can design the system, with another being the top reach of the forklift.
Building Columns
It's nearly impossible to avoid having building columns in your space. However, "hiding" the columns within the flue space is the goal. Anything to keep the building columns from impeding forklift aisles.
Uprights
In carton flow applications, the front upright or post tends to shorter at the discharge point, but can be full height to accommodate storage locations above hand pick elevations.
Rollers
Rollers are tailored to your product type and weight. There are many types ranging from full span metal roller to small polycarbonate wheel tracks.
Aisle Spacing
The forklifts determine the aisle spacing. Do not forget about the forklift when designing your carton flow system! Although carton flow is normally foot traffic there may be palletized goods stored above.
Conveyors
Gravity and powered conveyors are a common addition to have have adjacent to carton flow to help process, flow and operational efficiency.