Air Carbon Filter Smellines Control with Australia Virgin Charcoal for Inline Duct Fan, Grow Tent, Pre-filter Included (4″(Filter Fan Ducting Vent Cover))

This works great for my setup, 2×4 tent with 2 led lights and two tent fans. When my tent zipper is shut with the vents open you cannot smell some of the stinkiest flower I have ever smelled or grown, even with the zipper open if you turn the fan up a little you can barely smell in the room. I do wish the power supply was a little sturdier, seems like it would be easy to mess it up. But as long as your careful shouldn’t have anything to worry about! Is a bit loud when turned up but on low it’s not bad!