Hi Kinsey, not every product has BIM/CAD files, so first you have to make sure the product you are looking at has Revit files available. The easiest way to find products with the right files is to do a search and then use the 'Formats' filter to tick the relevant file formats. You can search for a particular product or even do a blank search like this: https://www.modlar.com/search and then tick the Revit format on the left hand side. Once you find a product with a Revit file, you will see a Download section on that product's page and using this will automatically download a zip file with the files you select. Let me know if you need any more info.