My other concern is how big of a hole for the air to be sucked in would be. Too little and I won't get enough flow, too big and I will have odor leaks. Any ideas on how to determain the cercumfrance?
-
As of today ICMag has his own Discord server. In this Discord server you can chat, talk with eachother, listen to music, share stories and pictures...and much more. Join now and let's grow together! Join ICMag Discord here! More details in this thread here: here.
Where to put my carbon scrubber?
- Thread starter Big Bud Bear
- Start date
Go with 3x the area of the exhaust hole....so in your case, ~36 sq/in for a 4" fan. I prefer more smaller holes instead of a single large one to create a more even flow of air. I run my fan 24/7 (hey they need air at night too 
) so there's never a chance for odor leaks to occur since there's always negative pressure in the area.
) so there's never a chance for odor leaks to occur since there's always negative pressure in the area.
The exhaust hole would be big enough for 4 inch ducting to do trough. So your saying the intake hole should be 3 times the size of the exhaust hole(ie 3 4 inch holes?)? that seems pretty big, or do you mean it should be 1/3 the size to create a vaccum seal?MTF-Sandman said:Go with 3x the area of the exhaust hole....so in your case, ~36 sq/in for a 4" fan. I prefer more smaller holes instead of a single large one to create a more even flow of air. I run my fan 24/7 (hey they need air at night too
Yes, it should be 3x as big as the exhaust. Using less venting area will lead to excessive back pressure that isn't needed...which will slow down the output of the exhaust fan. 3 4" holes will work, a single 6"x6", 6 3" holes, 12 2" holes, etc.
thanks for ur input, i'll make a thread sometime soon when i'm not as lazy as normal with some pix of my cabnit and what i plan on doing with it. i'll welcome your suggestions.MTF-Sandman said:
when you say 3 inch hole, you mean 3"x3" or you mean a 3 inch round holeMTF-Sandman said:
Those were all for round holes except the 6"x6" which was a square hole...
I will just buy 3 inch pcp piping, I need that any way as i have to make 90 degree bends so no light gets in. I will then use filter material on the holeMTF-Sandman said:
