Ventilation & Filtration Systems?

[snapper]

Just bought 2 of these 4" inline fans / controllers. $63.99 each.

Mars Hydro 4 inch Inline Duct Fan with Thermostat Controller

Fan/Filter/Duct Size: 4 Inch Airflow: 205CFM Noise: 26.8dB-A Controller Type: Digital Thermostat Controller

marshydroau.com

Will be good to replace the Vivosuns i have in the small tents which rattle like they're about to fall apart ..

Great value, A mate has them. The thermostat controllers are pretty good.

 

[Goonie Goat]

Great value, A mate has them. The thermostat controllers are pretty good.

should be more efficient than my current setups which is a plus.
They got the 6 inchers for $75.99 which seems like a good deal too.