I've got nine perfect squares, 12" by 12", and another nine imperfect squares (where corners are missing). The nine good ones are 1/2" thick, while the imperfect squares are mostly just a shade over 3/8" (three of them are 1/2" thick). The imperfect squares can be put through a table saw (or cut with an extended exact-o knife?) to create even rectangles for your project. Use these for bulletin boards or nifty art projects. Fill your boots.