High density pallet storage systems that utilize depth to increase capacity. Slightly inclined rails fitted with heavy duty rollers help pallets to roll down to the first un-loading position by help of gravity. FIFO principle helps in storing highly perishable material with strict expiry date compliance. Loading & un-loading from different ends with no intermittent aisles. Up to 20 Pallets deep can be stored on one level, very dense storage. All operations carried out by normal forklifts.