Where can I get a carbon filter that isn't a hydro store? What are they used for apart from extracting cannabis fumes?
I ordered mine from an eBay user and it came in a very plain brown box with the return address as "Shipping Dept." so you would never know. they can be used to clean air in paint both for automotive application and other applications where really clean air is need. I want to say lab clean rooms use carbon filters but i think they now filter their air using light treatment....