Google SketchUp is a 3D modeling computer program that architects and other designers use. SketchUp’s online source for free content is called 3D Warehouse and we have two links to this website on marvin.com’s Technical Resources page. The link labeled “All SketchUp” goes to the Marvin Windows and Doors profile page where all our models are located. The second link, “Dynamic Components”, goes to a collection of our models that are dynamic. Once loaded into a project, these window and door models can easily be changed to a different size color, lite cut, etc.