Deep Selective Metallic Racks are used when there is not much
space available for the storage of merchandise and when there
are five or more pallets of each SKU and these are picked
normally in multiples of two.
Its main advantage is that the necessary space for the aisles
is much smaller, compared with the single deep selective system,
eliminating, in some cases, until half of the aisles of a
single deep selective system.
Its main disadvantage is in the fact that only has direct
access to the pallets faced the aisles. Additionally, the
lift truck to use is different from the conventional one,
since it must have a special element, which allows the extension
of the forks (double reach), to be able to store the pallets
in the second level in depth. This feature increases the amount
of money necessary to buy the equipment.