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AC Infinity

AC Infinity Air Carbon Filter 4" with Premium Australian Virgin Charcoal.

  • Based on 10,251 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Sep 10
Order within 21 hours and 42 minutes
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Size: 4-Inch


Features

  • 4 inline filter designed to block odors and chemicals from escaping grow tents and hydroponics rooms.
  • Features premium-grade Australian charcoal with greater adsorption and longer life rating.
  • Powder-coated gunmetal finish is constructed for high durability and rust resistance to high-level humidity.
  • Built with aluminum flanges and a galvanized steel mesh; includes two straps, two rope clips, and two pre-filters.
  • Duct Opening: 4 | Length: 12" | Airflow Rating: 210 CFM | Carbon: Australian RC412 at 1200+ IAV | Thickness: 38mm

Description

Effectively block out unwanted odors in your grow space. Improve air quality by installing our high airflow duct-filter to trap and eliminate strong chemicals and smells. Carbon Filter 4-Inch Carbon Filter 6-Inch Carbon Filter 8-Inch Carbon Filter 10-Inch Carbon Filter 12-Inch AC Infinity is a technology company that specializes in environmental controls for agricultural and HVAC applications. Our smart controllers and integrated grow equipment are designed to work together to create the perfect climate for your plants.

Brand: AC Infinity


Material: Alloy Steel, Aluminum


Product Dimensions: 12"L x 12"W x 1.5"Th


Compatible Devices: Inline Duct Fan, HVAC Systems, Ventilation Devices


Item Weight: 5.5 pounds


Filter Mounting Type: Slide In


Filter Shape: Rectangular


UPC:


Air Filter Construction: Solid


Manufacturer: AC Infinity


Compatible Devices: Inline Duct Fan, HVAC Systems, Ventilation Devices


Filter Mounting Type: Slide In


Filter Shape: Rectangular


Product Grade: new


Compatible Hvac Systems: residential


Common Applications: Industrial


Item Dimensions L x W x Thickness: 12"L x 12"W x 1.5"Th


Item Weight: 5.5 pounds


Unit Count: 1 Count


Material Type: Alloy Steel, Aluminum


Air Filter Construction: Solid


Brand Name: AC Infinity


Model Number: AC-DCF4


UPC: 819137020665


Manufacturer: AC Infinity


Number of Packs: 1


Included Components: [Hanging Straps, Pre-filters]


Manufacturer Part Number: AC-DCF4


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • It’s a filter!
Size: 6-Inch
Well it’s a filter and it does its job but it’s AC infinity so it looks pretty too. This thing is sturdy and easy to clean or swap out the filter material so it’s a huge plus over my last one. It has a good seal against my AC infinity fan and they’re both super quiet together. Helps keep the stank in the grow room to an acceptable level - solid product from AC infinity as always! ... show more
Reviewed in the United States on March 11, 2026 by CK
    • Another AC Infinity product I'm happy with..
Size: 4-Inch
I have what is essentially a grow tent, except I don't grow anything in it and sleep in it instead. Because the air in there automatically gets thick n' clammy (like a good chowder), I bought an AC Infinity.. uhh.. T series? S series? The one that HAS the electronic control stuff-- inline fan. I also bought some of their ducting, and then used some generic 4" bits and pieces to make stuff work to pump fresh are into my sleeping pod. However, I noticed that I was waking up, kind of often, with a pretty bad smell in my nose. Sometimes, I'd know what it was, other times not, but I bought one of these filters for the intake side, and I'm able to draw in air from my room and give it a nice fresh non-scent. It hasn't messed with airflow too, too terribly, and I am still able to pick up air conditioned air when I want it by placing the filter at the outflowing vent of my AC. The first day or two, the non-smell in my room (basically, a smell unto itself-- almost sweet) was intoxicating. I also noticed-- as dumb as this will sound-- that the air felt smooth, as though it was almost too easy to breathe. Long story short, I'm very pleased, continue to be impressed with AC Infinity (I have a few of their hobby/kit fans, also) and find all their stuff well worth the money. ... show more
Reviewed in the United States on February 8, 2022 by Fletcher
    • Perfect odor control
Size: 6-Inch
Filters very well, lasts several grows
Reviewed in the United States on July 12, 2026 by Stippy
    • Great Product
Size: 4-Inch
Love this product and many other AC Infinity items i own. Top shelf
Reviewed in the United States on July 10, 2026 by Botoby
    • Get it
Size: 6-Inch
Works awesome
Reviewed in the United States on August 7, 2026 by Dickwilson
    • Good build quality, ACI aesthetics, and it's massive
Size: 8-Inch
Massive. I bought it with a matching ACI exhaust fan just to scrub the lung room when in there with the tent open. Ended up placing it inside the tent to help more from leakage. It has helped some but not nearly what I expected from nearly 800cfs and the size which comes with extra expense. It's been running a few weeks now so not sure on longevity. I will say my ACI carbon filters haven't lasted as long as I expected. The 6" that is feeding from tent to attic stopped filtering well after only 3 months in the same grow this is in now. I've had better lifespan from cheaper brands but like the build quality and ACI ecosystem (for most things). I'll eventually crack it open to see I can replace the carbon or have to grab a made to be refilled one. ... show more
Reviewed in the United States on April 27, 2025 by A Person
    • Definitely got the smell out of my vent tube
Size: 6-Inch
First time using one of these in line filters so can't compare it to anything. But I can say after I hooked it up it dose definitely scrub the smell out of the air. Is nice it come with 2 filters and all needed to hang it
Reviewed in the United States on July 21, 2026 by Rob D
    • It's AC Infinity brand 6in carbon filter. You cannot go wrong with this.
Size: 6-Inch
Wow. I should have gone with AC Infinity brand gear from the get-go. I'm kicking myself for not buying AC Infinity initially. This carbon filter is real nice. Especially if you're used to the cheap Amazon brand ones, like iPower. Not only is it made ALOT nicer, I think it works better too. I don't know about how long it'll last, yet, but if I had to make a guess, I'll still be using this carbon filter in late 2026, if not longer than that. Arrived in good shape and super fast too. I cannot recommend AC Infinity brand stuff enough. If you're spending your money on the lower cost brands, you'll actually save money by only having to buy once, instead of multiple times in the same time period. So, plz, stop wasting your money on lower cost brands, like iPower. I promise you that you'll wind up spending less, over time, buying AC Infinity. ... show more
Reviewed in the United States on July 6, 2025 by Eric M.

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