Capable of adding directional control by narrowing the modifier's
beam spread, the 40° Eggcrate Grid for Rapid Box Octa XL and Switch Octa-M from
Westcott also controls spill light and enables selective lighting, meaning that
it allows you to light areas that you want illuminated and keeps light from
areas where you don't want it. One of the handiest inventions for the
image-maker is the collapsible grid. Made of nylon, this grid attaches in
seconds to the softbox via touch fasteners and collapses flat to a fraction of
its open size for storage and transport in the included case.