About this 3D model

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