Cedar Planter for Deck Railing

This is a sketchup plan for a small flower planter for a deck railing.

The sketchup model is complete, but i didn't trim the side pieces (i call them slats) to fit the basic frame - i intend to cut them to size when i build it. For this reason, the side pieces (groups) extend beyond the end of the frame. There's a method to my madness!