CL2000 series 4-way barndoors. This set of barndoors allows you to contour and control the CL2000's output angle. The 4-way barndoor set is constructed from aluminum with a black non-reflective finish. The barndoors slide into the outer channel on the frame of the C21000 light. 2 small screws firmly hold the barndoors into place when tilted. The barndoors fold flat when not in use. They also feature a built-in filter tray for semi-rigid filters.