The Glow Egg Crate Grid 36x48"" modifies the light ouput from any softbox with Velcro system fasteners like the Glow R or 3 series products. The 2"" cube cell grid attaches to the recess lip outside of the diffusion screen and effectively controls the beam spread and light spill for a 40 degree dramatic soft touch. The lightweight grid adds fine tuning to your photographic art with a distinct lighting advantage to the common softbox..