Double deep rack is a variation of single selective pallet racking and is created by arranging two rows of single selective rack back-to-back. Utilizing a specialized lift truck with a scissor reach that is capable of extending the depth of two pallets, lift operators will place the first pallet stored in the rear section of rack before filling the front section. Double deep reach trucks work well with narrow aisles, reducing the amount of space required for servicing. This combination of storing double pallet density and reducing aisle width offers greater utilization of warehouse space, saving up to 60% of space.