Medium diffusion of direct light. Introduces a significant amount of ambient bounce. Similar to Light Grid Cloth without the U.V. coating. Silent in the wind while used outdoors.All Butterflies and Overheads are grommeted approximately every 24" with nickel plated brass grommets and come with string ties in the package.Reduces Light: 2.0 f-stops.Size: 12ft.x 12ft.