Micro-Mesh Sanding Pad Double Holder

My original here http://www.thingiverse.com/thing:37071 was a single holder that was very popular. I decided to make it a little taller (+1 more pad) and also double sided.

First reason for the double sided was I have extra pads (these things are great). Second reason is that if you are going to go through all the grits on a project then you have a place to put the grits you have already used. In other words, move them from one side to the other as you use them working your was from the lowes