I have noise in my wooden grow room with the ventilation

[gusfraba]

can anyone have a cheap idea ?

 

[gusfraba]

i ll try the recommendation of the 420 site but is stiil here.the wood is slim and produce some kind of hum

 

[Weaselcracker]

Any devices that cause vibrations or noise should be hung from the ceiling or walls as opposed to attached/touching. Rubber (bungee cords) works well. Also rubber as a backing between walls and ballast, fans, etc works well. To soundproof the room cover it with a layer of dense material such as drywall (Sheetrock).