4inch Carbon Filter Odor Control with Australia Virgin Charcoal Two Prefilter 1 Pair Rope Hanger Included for Inline Duct Fan, Grow Tent, Hydroponics, Odor Scrubber

So we have a couple rescue cats. The dust from the litter boxes gets to me and I hate it. So I was looking at different air cleaners and so many were way too expensive just to filter the air a bit in the basement.I found this and bought a digital on/off timer so the fan and filter could cycle the air for a few minutes every few hours or so. It works so good that any odors and dust were quickly pulled from the air. If you keep the supplied sock (pre filter) on the filter it’ll last a very long time.The only issue I have with my setup is that sometimes it creates a lot of noise. Mounting it to something solid helps but the fan connected to the filter will get a bit of a squeak at certain speeds.I also bought a variable speed switch for this so I can control how hard the fan works.If you don’t have the money for a fancy setup you can get my entire setup for much cheaper than paying full freight for an all in one air cleaner.I paid almost $200 for an air cleaner with UV/filter/etc but the filter crap out very fast and they are very costly.A lot of people don’t realize with a little ingenuity you can create a very comparable setup at a much cheaper cost. Clean air is a must these days!

I have terrabloom expensive filters and ac infinity. They have worked well removing 90% of the heaviest of smells. I removed the a.c from the tent I put this cheap brand filter in. The tent smell is unbelievably strong right now and this filter cleans the loud smell 100% I cannot even believe it. I had the expectations that this would work enough to tame the smell as I push it to another tent but seriously this is the best working filter I have seen yet and it's only a 4 inch. My 6 inch terrabloom isn't this effective. Don't get me wrong, the room stays smell free with the others even though u notice a light hint front the exhaust pipe it ends up being clean when mixed with fresh air. But for the price this is the best! Also the hooks for your hanging chains are the best addition yet. Note: pre filters are cheap and fuzzy but that's something you can live with if it works this well. Try it you won't be upset and you will have discreet growing. 4 inch works amazing in a 2x2 with 188cfm inline fan.

Zero, and I mean zero smell. Great quality filter and will fit in most small to medium grow tents. Airflow does not seem to be obstructed. Very good investment.

Not a bad filter for the price

Nice to have hanging hooks attached to the filter.

I needed a fan that would dissipate smell and create good airflow. This solved both my issues. We will see how she does through flower of my tomatoes.

Works excellent, beside having to buy multiple covers for it, its one of the best out 👌

Attached this to our cat's litterbox via a duct and fan. Bought it April 27th, it's only Jun 15th, and it has stopped filtering effectively. We only ran the fan on low too. Expected a longer lasting filter.Also, you can't even open the filter to replace the activated carbon yourself. They seal it with metal pins that cannot be removed with a screwdriver. So once it's done, it's done, you have to toss the whole thing and buy another one. I would much prefer one that I can open and replace the insides myself. Instead, it seems they want you to buy a brand new one every 2 months. No thanks.