These Aputure Barndoors are specifically designed for the Nova P600c LED panel and slide directly into the fixture's accessory slots. They allow you to quickly shape the light, adjust the panel's illuminance area, and include fabric light leak covers to eliminate excess light spill from the sides of the barndoors. An ideal tool for cinematographers and photographers alike, these four-leaf barndoors provide sharp cuts and are an excellent tool for controlling the direction of the light. Four-leaf barndoors fit securely into the Nova P600c accessory slot Flexible fabric covers with hook-and-loop design prevent light leaks Durable high-quality aluminum construction