Hi! This is Jon on behalf of Expert Village. In this video clip, we will be laying out the top and the bottom. Going back to our drawing, our bookshelf width is 22 so we know that our top needs to be approximately 22 inches by 10 inches deep. If we take a little bit closer look at what that is going to look like, our top piece is actually going to be going in between our side pieces. Our side pieces are each 3/4 of an inch so we need to add those together and subtract 1 1/2 inches from 22. So our top will be 20 1/2 inches by 10. However, we need to subtract 3/4 of an inch off that front edge so that we can put out trim on which gives us an overall measurement of 20 1/2 by 9 3/4. Our bottom piece will also go between our two sides so that is going to be our exact same measurement as our top piece. Now rather than putting on a little piece of trim, we are going to be putting on this kick plate but that kick plate is also going to be 3/4 of an inch. So for both our top and bottom pieces my measurements are 20 1/2 by 9 1/4.