This LEE Filters 24″ x 25′ Black Foil Roll is the perfect way to conrol the lighting on your set. This foil can be used to black out windows when shooting indoors. Simply pull the desired amount of foil off of the roll and apply with tape to the window you are trying to black out. This opaque foil is a great alternative to bulky, and heavy duvetyn. The Lee filters 24″ x 25′ Black Foil goes up quickly and tears down easily. This foil can also be attached to light fixtures or barn doors to harness and focus your lighting the way you want! Sometimes, your lightsource may be too hot to use a flag or cutter, and in this case the Lee Filters 24″ x 25′ Black Foil Roll can be used as a safe and effective way to control your lighting.24″ X 25′ RollUse to black out windowsAttaches to light barn doors