USG offers a design studio to assist you in quickly and accurately selecting the specific products you need and are required to have for you acoustical project ideas.  You can find the products that meet the technical specifications you want and/or are required to have.  Along with ES reports and other specification worksheets, this web site offers a down loadable CAD program which will enable you to visualize your project and the immediate effect of any changes you wish to make.  Get started by visiting their web site "HERE".