Once the rights to market a product or service have been acquired, you may offer other products along side your "product franchise."
The ability to sell a particular companies product that does not constitute all that you sell. For example you may have a service station that sells a brand of gasoline, but you are not restricted on the other products or services that you can sell. Many times these are not true franchises, but can be considered distributorships.
A type of franchise where the franchisor grants the franchisee the ability to sell a particular product where that product does not constitute all that the franchisee sells. Similar to distribution networks yet the franchisor is able to control the way the dealer company operates by restricting the sale of competitive products or the type of marketing that it can do.
When you acquire the right to market a product or service that does not constitute a majority of all that you offer, you have a "product franchise". (Such as Kraft cheese in a supermarket.)
Once the rights to market a product or service have been acquired, and they do not constitute the majority of all that you offer, you have a "product franchise."