Fits SUPERNOVA Reflector and FLORALUX and MiniFLORALUX Grow Light Fixtures manufactured by High Yield Lighting.

Perfect for air cooling your SuperNova reflector or Floralux fixture. 4" round opening fits 4" flexible ducting or 4" inline duct fan.

Also can be used to attach 4" flexible ducting through or ceiling for ventilation purposes. Also can be made to fit onto end of 265 cfm Dayton Pole Cage (Squirrel Cage) Fans.

One single 4" flange