Customers can change the layout view of collection pages with the Collection Control-bar.
The Collection Control-bar can display layout options for shoppers to change their collection view dynamically. Choose from two to four images per row on desktop and one to two on mobile.
Desktop - Four images per row (most images per row)
Desktop - Three images per row (larger images)
Desktop - Two images per row (largest images)
Mobile - Two products per row
Mobile - One product per row
The Theme Editor settings allow you to customize the default number of products per row. Customers can change the view when layout options are turned on.
Theme Editor settings
Products per page allows you to control how many products are displayed on your collection pages. Pagination is added when multiple pages are available to shoppers.