HELP! Going to purchase a intake fan.

[Sj9820]

Hi all so I have decided to buy a intake fan but the smallest I can get is 5inch which is the same diameter as my extraction fan. Also my extraction fan on full power pull 284m3 per hour and the intake fan I am looking at pulls 200m3 per hour is this okay?

 

[Sj9820]

Found another that pulls 150m3 per hour

 

[Sj9820]

https://m.ebay.co.uk/itm/EcoDuct-Fans-Inline-Intake-Ducting-Fan-Grow-Room-Ventilation/322374727854 this is the one I have chosen, cheap and cheerful.

 

[Campesino]

That'll work fine as an intake fan. You will still have negative pressure to control smell etc.

 

[Sj9820]

Thanks Campesino, quite relieved as I thought I might need to spend more than I have.