Ventilation ideas.

im thinking about getting a inline duct fan from home depot put need to know if there too lound or quiet enough.Some people say when there one they hear a humming sound in the next room.im working with a 250 kit in a 2 x 3 x 5 cabinet which i plan to make.but then again its a hid light it might need better vent than just a simple inline duct.

i got the inline duct fan your referring to.
its loud but its only on when the light s are
my exhaust fan is much louder.
i have a catalogue that has a duct "muffler" in it. it says it cuts down the noise by 25db but i dunno of anyone that has used one