You do not need a docking station to use the Kensington® Adjustable Laptop Stand, though you can add one if you choose. The platform is designed to hold virtually any laptop or netbook.
The exact distance between the base of the monitor and the surface of the desk depends on the size of the monitor. The Easy-Adjust Monitor Stand accommodates monitors up to 24". The adjustable stand raises 24" monitors 1" - 5" off desk surfaces.
The 3M Extra-Wide Adjustable Monitor Stand is 20" wide and 12" deep.
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There is no limit on the quantity of risers your can stack. However, the riser is made to support a maximum of 75 lbs. Each individual riser weighs 5 lbs. Please be sure to deduct the weight of the monitor and each riser from the 75 lbs.
The back of the Monitor Riser is an open unit on either side. The main reason is because if it was closed it would trap head which could damage your laptop. The way we would describe the back of this item is that it looks very much like the front, which is shown in this picture.