Otherwise the whole purpose of the filter will be ruined.
Diy pc fan carbon filter.
See the graph below that shows an example of the filter fan performance.
Make sure your fan is an one exhaust fan with at lea.
Diy carbon filter for grow room.
I used this filter.
I know everyone says to use the fan to pull out the air rather than push but i found that because pc fans are pretty low pressure i only had luck pushing.
20 x 20 box fan.
20 x 20 x 1 merv 13 or fpr 10 filter.
The flanges are must to be of the exact diameter as the ducting and inline fan.
It still struggles a tiny bit but the back pressure makes.
Your total cost for a diy box fan filter can be as low as 40 50 00 including incidentals like duct tape or higher depending on the filter options.
I used a tupperware container the same size as my fan for a make shift housing which connects my 120mm fan to a 80mm custom filter.
We have tested the performance of these filter fans and they dramatically reduce fine particles and black carbon from the air.
The basic idea is to combine a fan with an activated charcoal filter.
1 x cut to fit carbon pad for air purifiers.
Learn more on carbon filters their types and functions here.
Supplies you need to make your own.
Next put holes in each corner of the carbon filter square.
Form your carbon filter by setting it over the computer fan and cutting it so it barely overlaps the sides of the fan.
What items do you need.