The studio essentials barn door set is a very versatile light modifier kit.the set comes with adjustable barn doors, a honeycomb grid, and a set of four coloured gels.the barn doors mount directly to the outer lip of the studio essentials standard 7" reflector, and most other 7" reflectors from other brands.The four individually-controlled leaves allow you to direct the light where you want it, and keep it from spilling where you don't want it.To control the spill of light even further, simply insert the included honeycomb grid.Add one of the coloured gels to create different moods to your image.