Specifications include, but are not limited to: 1. Provide power operation of stands by an electric motor operated pusher linkage reel system that does not apply tractive force to the floor. Control unit(s) by plug-in, walk along pendant switch and remotely by key-operated wall mounted switch control station. 3. Provide open and closing limit switches that automatically stop the system when the stands reach the fully open or closed position. 4. Provide and install the following accessories: • Non-slip tread nosing at the vertical aisles • Intermediate aisle steps at each vertical aisle, which are totally enclosed • Transitional top step where the last row of stands is adjacent to a cross aisle • Removable front steps, that engage the front row to prevent accidental separation or movement and are equipped with a maximum of 4 nonskid feet • Permanently affixed aisle handrails located at the centerline of each vertical aisle and discontinuous with gaps or breaks at intervals not exceeding five (5) rows. Equip handrails with an intermediate horizontal handrail below the top rail • Self-storing type end railing • Side fillers including supports for closing openings between the lowest row and the rear wall on each side