The Hydrofarm LG50025 4 inch outflow flange is perfect for connecting your Active Air blower to a duct in the ceiling. This attachment, when fitted to the exhaust opening of your blower, allows for an easy connection between the blower and the ceiling ductwork. This flange has an opening diameter of 4 inches and can be attached to the outflow side of the 465 CFM Active Air blowers.
ActiveAir 465 Outflow Flange – 4 Inch
This Active Air flange fits snug as a bug on any 4 inch 465 CFM Active Air fan.
– Slim design for maximum connectivity, perfect for outflow.
– Integrates easily into existing ventilation systems.