Westcott 2469 40-Degree Egg Crate Grid for 12 x36 Inches Stripbank (Black)Egg crate grids are made up of cells that control off axis light in four directions while maintaining the soft quality inherent in a large light source. This allows you to create separation and depth such as a hair light where you want to control just the light going onto the hair in order to separate it from the background.