Papers that will meet 7 pt. Art Litho always recommends that you consult with your account executive early on when choosing paper for your printed pieces. Ask them about the economies of using their house stocks. It's also good to have an understanding for yourself of how paper and its characteristics affect your finished product. This is most important in printing and binding.
Paper folds smoothly with the grain and is stiffer.
When folded across the grain, it can crack or become rough. For example, grain direction in books and catalogs should be parallel with the binding edge to reduce curl and make the pages lie flat and turn easier. Basis Weight is a way of identifying paper. The basis size in the U.S. is not the same for all grades of paper - book paper, cover paper, bond paper, newsprint, etc. Color affects the color reproduction of lighter tints.