The Universal A112 barndoor set will allow you to control light cast of  subject when attached to the front of the reflector of your light source. 
This A112 barn door kit attaches to flash reflector and comes with 4  doors attached to the frame. By a simple tension spring the barn door is safely  fixed in the reflector. The wings are cut in a way that they may be shut closely  and then prevent optimally from undesired, laterally emitted stray light,  similar to a simple conical snoot.
The removable honeycomb spot grid fits perfectly within the frame and channels  the light within a narrow path for dramatic, sharply defined contrast accent.  The included trans

parent colour gel filters snap easily into the frame and will  allow you filter to your light to produce professional lighting effects.
* Universal design for most of the reflector with diameter 6.7" (17cm)
* Frame in sturdy steel construction
* Can be attached at any degree of rotation with lever clamp system
* 4 independent flags position at any angle
* 4 coloured transparent gels for effects (Red, Green, Yellow and Blue)
* Included a great honeycomb spot grid for a precise look

Package included:    * Barn Frame with 4 Barn doors A112 Universal

* Honeycomb grid
* Red, Green, Yellow and Blue gel filters