PushBack Rack provides high density storage from a central aisle. Multiple pallets are stored on a gravity fed cart system allowing retrieval of the pallets from the face of the rack and maximum number of picking faces on a single aisle. Flow Storage System uses a converyor type load track fitted with wheels or rollers according to the type of pallets used. Pallets are initially loaded at the enter aisle of the system by a lift truck and flow at controlled speed by gravity towards the discharge face.