This type of racking is designed to allow product and material to ‘flow’ forward upon each box removal of product. This racking system is beneficial in a packing line of work with the use of conveyors. The flow is created by leaning beam levels and the use of a gravity feed rear load design. When the boxes of product are removed from the front of the bay, the product which sits directly behind it moves forward automatically, and thus creates the flow of the system.