This is an Arri Four Leaf Barndoor Set for the 650W Fresnel, 200W HMI, 400W Pocket PAR & Pocket Lite. Barndoors attach to the front of a light and are used to restrict light from areas of a set. They have either four or eight leaves that can be adjusted. Arri barndoors are heat resistant and rotatable.
Arri 4 Leaf Barndoor Set for 650W Fresnel, 200W HMI, 400W Pocket PAR