Adding upper shelving to built-ins

I decided to keep the uppers shallow as to not block the window..which  meant I could use MDF 12"x 8' boards which are under $6.00 each.... I was going to take a break and not install these uppers at this point but I figured why not just get it done now. 

I really love having 9' ceilings, these built-ins are so tall.

I used 1x3" pine to create these simple boxes I attached them using Kregjig pocket holes.

 Here I am testing out some shelf placement.

As you can see creating these boxes is really simple 4 boards and 2 sides that's it, this will all be hidden. I can use these pieces that lay up against the wall to attach the boxes to studs in the wall.

Today I will work on the shelves which will be thick 2" shelves....I just don't know if they will be painted or stained...I will know when I go shopping for materials.
See you soon.