Magazine Box

So I have been collecting a lot of magazines and even have a few periodical subscriptions. I came across this little bit of wood in my late father in laws shed and I was wondering what I could use it for, I have seen paper or cardboard versions of this box but they were too big or not big enough to fit where I want them to go so I decided to build my own and thanks to my little wood discovery I can do it. (Thanks John)..

The pic below shows the wall unit I will be putting the boxes in.. I think the bottom shelf will do.. and I plan on 
making 4 of them.

The Box Dimensions are: Sides 11"x11" with a cut from top to bottom (see diagram) Back 11" Height 4"WideFront 4"x4" Bottom 4" Wide x 9.5" Long