hi all what size fans would be best for a room 10x7x8feet with 4 600w hps

Yikes! sounds almost commercial...
You'd be best to pick from one of these options.....


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thanks for that i work away 6 months a year so only got time for 1 or 2 grows i want to make sure iv got some to take away with me

@ reverendRFB

nice one r........ thats funny

na just a touch big for me room i think

should keep me and a mate going

For that you need just over 800m3/hr, in summer, the period of highest demand. RVK 200 (8") L1 model is OK, still allowing for a CF.