Day 3: Shelving Unit Bracket

I'm trying to upload a Thing-a-day this February.
makerblock.com/2011/02/makerblock-thing-a-day/

We have a shelving unit that needs to be bolted to the wall. This bracket is designed to bolt two units to each other and then screwed to the wall.

Day 3: A shelving unit bracket. http://www.thingiverse.com/thing:6001
Day 2: A mirror bracket. http://www.thingiverse.com/thing:6000
Day 1: A bathroom hook. http://thingiverse.com/thing:5999