Google has rolled out in the United States new SERP features that display products listed in Google Merchant Center and Manufacturer Center right in organic search results. These product results are shown in an organic search carousel for search queries related to those products. Both the Popular Products and Best Products carousels consume a generous percentage of SERP real estate. Most people will find their placement above-the-fold on the desktop. On mobile devices, this holds true for the majority of Product Knowledge Panels that are triggered after a selection has been clicked within an Organic Product Carousel (OPC).