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MELONFARM

MELONFARM 4 Inch Air Carbon Filter Smelliness Control with Australia Virgin Charcoal, Odor Removal Carbon Filter for Grow Tent, Inline Fan, Hydroponics, Pre-Filter Included, Insulated Flange 4" x 11"

  • Based on 396 reviews
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Mar 28
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Size: 4"x11"Fifer


Features

  • Excellent Odor Control: The air carbon filter is designed to eliminate odors and chemicals using activated carbon, it is not only suitable for odor control and purifying the air in your grow tent/room, it can also absorb odors from pets, smoke, cooking fumes, providing you with cleaner and healthier air.
  • Durable Flange and Base: The carbon filter 4'' flange and bottom are not removable, strong and durable, it can effectively filter odors and extend service life. The heavy-duty flange can be seamlessly installed on the pipe, with stable structure and high precision to prevent carbon leakage.
  • Premium Activated Carbon: The carbon filter for grow tent uses premium Australian virgin charcoal bed, rated at 1050+ IAV, providing 100% filtered airflow, it is suitable for grow operations, bathrooms, kitchens and restrooms with odors. The 38mm thick charcoal bed has a high microporosity, it can achieve better adsorption and air filtration.
  • Compatible Features: Air carbon filter smelliness control can be used with 4'' inline duct fans, configured with intake and exhaust ventilation systems. Double-sided galvanized steel mesh adopts hexagonal design, which greatly increases the open area, ensuring maximum airflow of 224 CFM, thus achieving higher filtration rate.
  • Widely Applicable: This carbon filter odor control can be used as an intake or exhaust filter in various settings, providing two-way filtration, it is suitable for inline duct fans, grow tent fans, closets, storage rooms, kitchens, bathrooms, basements. Size: 4'' flange duct x 1. Package Included: 4'' carbon filter 1, pre-filter 1.

Description

The air carbon filter is designed with high-quality Australian granular activated carbon to provide you with excellent carbon porosity, it is not only suitable for odor control and purification of the air in the grow tent/room, but also can absorb odors produced by pets, smoke, cooking fumes, so that you can get clean and fresh air. Product name: Air carbon filter smelliness control Product material: activated carbon, galvanized steel wire. Size: 4'' flange duct x 11'' length. Product color: silver. Package Included: 4'' Carbon Filter × 1, Pre-Filter × 1. Features: 1. The carbon filter for grow tent has premium Australian virgin charcoal bed, rated at 1200+ IAV, providing 100% filtered airflow. 38mm thick charcoal bed ensures higher absorption rate and longer service life. 2. Insulated flange, honeycomb structure, galvanized steel mesh, conical inner base. Reusable carbon filter, no need to replace the entire filter, saving time and cost. 3. Carbon filter odor control can be used as an intake or exhaust filter in various settings, such as inline fans and duct fans, intake and exhaust fans, air exchange fans, ventilation duct systems.

Product Dimensions: 6.93 x 6.93 x 13.78 inches


Item Weight: 4.92 pounds


Manufacturer: MELONFARM


Item model number: MFACFILTR4


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 28

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

    • Great for winter use
Size: 4"x11"Fifer
I use this in the winter to purify and deodorize the house in the winter. The air can feel pretty stale after being stuck inside all winter. I just connect this directly to my blower and run it in whatever room needs it. Truly feel like it cut down on our sickness and made the air feel light and fresh! Throw a dryer sheet on the output side and it smells like spring all winter. ... show more
Reviewed in the United States on January 21, 2026 by andrew hill
    • Pretty impressive little filter
Size: 4"x11"Fifer
So far seems good. I don’t even need to use ducking with this. I have it connected directly to the in-line fan and this just sits right on top of the tent. My set up is so small and this is such lightweight. It works great. It doesn’t prevent airflow issues. It doesn’t stop the suction from the exhaust fan. The degree of pressure that comes out is the same. It’s just filtered which is ideal for gardening and I was surprised that the function for how inexpensive this was I definitely recommend it. ... show more
Reviewed in the United States on April 11, 2025 by greg
    • Works fine
Size: 4"x11"Fifer
Great for front room,I use for 60days with filter cover,then toss cover and use 60 more than depose.
Reviewed in the United States on February 17, 2026 by STAb
    • Very good odor control
Size: 4"x12.6"Fifer+Fan
Assuming it holds up over time, this is an effective scent filter and air mover for the indoor weed grower. It's easy to install, well built, and an excellent value. My tent is small (24"x36"x60") and I only need to use the lowest setting on the fan controller, so it isn't very noisy, but it is loud if you crank it up. IMO, it can easily handle filtration duty in a much larger grow space. ... show more
Reviewed in the United States on April 13, 2025 by Bruzr
    • great product works great for dual room grow tent!
Size: 4"Fifer+Fan+Ducting
Review Image by Sharptooth Sharptooth
Review Image by Sharptooth Sharptooth
This worked perfect rite out of the box and into the tent! MELONFARM FOR THE WIN! Brought temps down in my veg and clone side of the tent perfectly has a prefilter on it just haven't put it on as of yet. For the fan it self it works great has a great adjustment knob that you can change the speed of the fan to suit your needs. On full blast it is just a touch loud but it is manageable to deal with. all in all this is well worth the money! by the way this one is good for a 2x2 or 3x3 at max. hope this helps anyone in the fence about buying one. i know im getting the larger 6in for sure when i need a new filter on the other side of my tent! :) ... show more
Reviewed in the United States on September 29, 2024 by Sharptooth Sharptooth
    • Would recommend.
Size: 4"Fifer+Fan+Ducting
Review Image by Michael Michael
Works great. I'm very happy. Easy to install.
Reviewed in the United States on February 28, 2026 by Michael Michael
    • Very disappointed. Past return window
Size: 6"x11.8"Fifer
We bought a whole new set up on Prime Day in July and purchased this as an extra filter to have on hand when that one was ready to be replaced. Put this one on a couple days before Christmas because the other one had reduced air flow after 6 months of use. Big mistake. This thing absolutely does not scrub the air at all. We had odor in the room it was used in and mildly even in the hallway and stairwell. We couldn't get it to go away. Never had an issue before. It's the new filter. Useless garbage. And past the return window because I bought it on sale on Prime day. Never again will I try an on sale off brand. It didn't save me any money at all. ... show more
Reviewed in the United States on December 27, 2025 by ericangie95
    • Great for eliminating smell from vaped flower
Size: 4"x12.6"Fifer+Fan
Review Image by whatever whatever
I bought this to use with a dry herb vaporizer indoors to eliminate the smell. I’m using it in a 10x12 room with the fan pulling across the surface area of the filter, with the fan blowing up towards the ceiling. I set the fan to about 60% and sit next to the filter with my noise canceling headphones (the volume isn’t awful but it can be annoying). I blow the vapor into the filter directly. Where this really works great is when you need to grind flower. Even CBD flower at 3%+ terpene content will completely destroy the room and outside hall unless I use this at the desk next to my grinder. I have to keep my room HEPA air filter running or when I switch it on after a big session or several sessions the room gets foggy and the HEPA filter works overtime. Obviously this carbon filter isn’t designed to filter contaminants, only smells, so it’s working as designed. Just something to keep in mind. I do not smoke so I have no idea how well it may work with combusted smoke vs. vapor. I think I can probably make this way more efficient using a half-open box so it draws the air in better from the side facing me, which may allow me to be able to reduce the fan speed and improve efficiency. I am playing with using activated carbon foam rolls made for AC window units and furnace filters as a pre-filter to increase the lifespan. They’re thin enough that they don’t seem to increase air resistance and super easy to cut to length and replace. ... show more
Reviewed in the United States on November 15, 2025 by whatever whatever

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