When I purchased the shadow boxes (shown under Home Decor section) that has 12 slots I was told that I could find the exact dimensions for each of the sections on line. Could you please direct me to this information? Thank you. .
— LeaAnn, IA on May 04, 2011

Here you are: http://www.archiversonline.com/media/trays/TrayGuide.pdf

Hope this helps!