This is a 90 deg. Flag and Cutter frame that makes it possible to position the instrument over the top of the set wall or to use two or more units to create a box for better light control. With this design, there are now three square corners as opposed to the older design providing just two.
Flags are square or rectangular frames with mounting pins attached and covered with a solid cloth material. Used to control light, whether natural or artificial. Flags can be used to protect the camera lens from flares or to control spill light from other sources, or keep light from reaching certain areas on the set.