Understanding the Card Files Category
The Card Files category, identified by ID 5531, belongs to the Office Supplies branch of the Google product taxonomy. It is designed for organizational tools specifically intended to hold, sort, and store small-format paper cards.
This category is intended for containers designed for indexing or filing cards. Based on items found in the US market, this includes index card files, storage boxes for trading cards, and specialized business card file holders. Other examples include plastic flip-top filing boxes, drawer-style card storage units, and vintage-style steel index card containers. These items must be primarily designed for the structured storage of index cards, trading cards, or business cards rather than general document storage.
Products that do not belong here include general-purpose storage items found in neighboring categories. If you are selling desk organizers, address books, greeting card organizers, or specific business card stands, please use those respective categories instead. File folders, portfolios, and mail sorters also have their own designated categories within the filing and organization tree. Additionally, if the item is primarily a carrying case for electronic media or a planner, it belongs in those separate sections.
There are no subcategories for this specific level, so all products fitting this description should be assigned to category 5531.
To include this in your feed, use either the numeric ID 5531 or the full path: Office Supplies > Filing & Organization > Card Files. The attribute is optional but recommended for accuracy. It is distinct from the free-form product_type attribute.