DIY carbon coal filter. W/pics and instructions

DIY Carbon filter for a 4x4x8 grow room.
Material List:
1 Clamp, and 1 85 CFM fan.
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1 6" duct air vent
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10 lbs of activated carbon
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Extras:
1.Foil tape
2.to add intensity/ carbon air filter sheets (used in demo)

Steps:
1.Cut a 6" hole in your grow room.
2.Place your duct vent into your hole, With vent inside the room
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3.Use your clamp to brace it over the top hole. and screw the clamp to the vent neck to support the vent when filled with carbon
4.Fill the vent with the activated carbon pellets
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Place your 85 Cfm fan over the vent opening (outside the room). Then foil tape so its sealed.
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The end result will look like this . Hope this helps and may your smoke be safe.
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God Bless