Wow!! I opened my e-mail this morning to find a flood of e-mails about my stamp storage! There were a ton of e-mails asking for more details about the crates. Since it is STILL RAINING off & on, I haven't finished painting my remaining crates, so it made it easy to take pictures.
To create the shelf, two 1/4" dowels are placed 5" apart horizontally. My hubby drilled holes, then glued the dowels in places, sanding the excess off the sides. It doesn't really need to be pretty if you're going to paint them like I did.
The next row of shelves will be placed two inches below the previous row. You should be able to fit 7 rows in each crate. Eight 8.5" x 11" drawers will fit in each crate.
Hope that helps!!