ADVANTUS-Cropper Hopper Hanging File Folders. These sturdy; translucent and acid free 13-1/4x14-1/4in polypropylene file folders are the perfect size for your scrapbooking 321. This is a great way to organize paper; album pages; scraps; stickers; die-cuts and more. Each package contains six white file folders; six clear tabs to label the folders and create categories to fit individual needs. Imported.