Vent help?

So i built this 8x8x7.5 box in my garage, there's a window near it and what not... So, i was thinking about getting 6 inch booster fan like this one http://www.amazon.com/LEDwholesalers-GYO2402-6-Inch-Hydroponic-Booster/dp/B003YFADW8/ref=sr_1_1?ie=UTF8&qid=1360901195&sr=8-1&keywords=booster+fan for my intake, i was thinking about doing something like THIS, https://www.youtube.com/watch?v=xRRaUgEHxLA mainly the box concept, remember, the 6 inch booster is my intake. and then i was also thinking about getting a 6 inch inline hydro farm inline fan like this one http://www.amazon.com/Hydrofarm-Active-Air-inch-In-Line/dp/B002JQ14F8/ref=sr_1_2?ie=UTF8&qid=1360901463&sr=8-2&keywords=inline+fan any suggestions would be dope!

64sq ft + 7.5 height = about 400 cubic sq feet so = 400 CFM Fan (cubic feet per min) No need for intake utilize the window with a 10''x10'' opening for intake of fresh air use 400 cfm fan exhausting try to exhaust out of your garage ,and you will be fine

jrainman said:

64sq ft + 7.5 height = about 400 cubic sq feet so = 400 CFM Fan (cubic feet per min) No need for intake utilize the window with a 10''x10'' opening for intake of fresh air use 400 cfm fan exhausting try to exhaust out of your garage ,and you will be fine

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10 inch vent with ducting?

If you go with 10" ducting (filtered as well), get a collar with a damper in it. You can set the intake flow to have the right amount of negative pressure under normal operation. Will allow you to have better control of the final layout. After you get your circualtion fans and any other filters or air moving equipment installed, you will more than likely need to adjust your intake to keep the negative pressure set right and that is where the damper will shine for ya.

Peace and Stealthy Grows

Asmallvoice

Yep 10'' opening is what is needed to move the air correctly, and as small voice said damper or fan speed controller to dial the room in .damper much cheeper then speed controller ,but the choice is yours.also you can go smaller with your fan and supply opening, but it seems as though most people end up expanding at some point like more wattage ect ect , So the choice is yours

jrainman said:

Yep 10'' opening is what is needed to move the air correctly, and as small voice said damper or fan speed controller to dial the room in .damper much cheeper then speed controller ,but the choice is yours.also you can go smaller with your fan and supply opening, but it seems as though most people end up expanding at some point like more wattage ect ect , So the choice is yours

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I decided to go with a 6 inch vent for intake, and i just bought a 6 inch Valuegrow inline fan, so the fan should kick ass! Thanks folks!

So basically you ignored what people told you. A passive intake needs to be 3x the size of your powered outlet. Now you have just boosted the negative pressure in your room ALLOT. Which makes your fan draw more amps and work harder.