There are many different types of pallet racking configurations that can be selected by end users depending on their storage needs. They range from low density selective rack all the way to high-density pushback , drive in, and pallet flow systems. Each configuration has advantages and disadvantages:
Selective Pallet RackThis is the most common style of rack system. It is low cost, readily available and provides access to every pallet. The down side is that nearly 50% of the facility is dedicated to aisle space (typically 9-12') and density is sacrificed.