The 4011-A Four Way Barn Door is used as a horizontal and vertical shutter. It can be set at nearly any combination in between. A gel and diffusion holder is built in, The 4011-A will mount onto any standard Novatron Flash head and to any Monolight, Bare Tube , or Convertible flash head with a 2032 relfector.
Reviewed by 1 customers
To direct and or keep light controlled.