Quick and easy DIY Carbon Filter

I want to start this off by saying Thanks to RIU and everyone in it. I love this site and get a ton of inspiration from it. Thanks!!

Ok so lets get started. What I did was went and got a couple paint respirators from the hardware store and popped the tops off using a flathead screw driver and removing the filling. I used 2 respirator replacements and gutted them completely then filled it back up with activated carbon from walmart and Viola. Insert it into a 3" pipe or ducting and hook up a can fan or inline fan and it works like a charm. I don't know how long it will last nor do I know what kind of load it can handle. I just made it and it is working so far for me.
Here are some pictures so you can get the visual idea. I am still working on the DIY instructions to this but here is a basic layout lol. Seal it off by using duct tape or just fold the metal back over. Not sure how easily these can be obtained anymore but I hope this helps at least inspire

nice man. i love when people get creative with marijuana things. i made a dube tube out of a soda can lol

Lol I had thought about doing a soup can with screen on both sides and wrapping it in duct tape and sliding it into a tube with a fan on both sides but this was what I had just lying around from old jobs n shit lol It worked for what I needed it for but I need to get a better fan because right now the fan isn't hardly doing jack shit for me lol What can you say about free materials ey?

free materials make it that much better lol. that suop can sounds like a good idea man