Pizza pan covers are used when dough is being proven in the pizza pan. the cover helps to keep air from getting to the dough and therefore assists it to rise. the differ from separator disks as they fit over the rim of the pan, there is then a recess so that the pan that is stacked on the top will not slide off when the stack is being moved or carried.
Always buy cover the same size as the base of the pizza pan you are using. Learn More