What are the actual dimensions of the 6" filter?

Hi, Thanks for your concern. Below is the size information for MARS HYDRO 6 inch carbon filter: Opening: 6", Length: 8.27" Hope this can help you. Thanks

How often do you recommend replacing this filter?

I would just go with a 6 inch carbon filter that way it pulls out more air if a 6-in can fit than a 4 in and if you get the 6 in replace it maybe once a year depending on how much you use it and how hard you're running it

Does this 4 inch filter hook up to a 4” duct ?

Hello, Thanks for contacting us. Yes, you can use the MARS HYDRO 4 inch carbon filter with 4 inch ducting and inline fans. Hope this helps you, please feel free to contact us with any questions. Best Wishes,

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MARS HYDRO 4 Inch Carbon Filter, Inline Air Filter Odor Control with Australian Virgin Charcoal, Carbon Filter for Inline Fan, Grow Tent, Hydroponics, Pre-Filter Included, Reversible Flange

MARS HYDRO 4 Inch Carbon Filter, Inline Air Filter Odor Control with Australian Virgin Charcoal, Carbon Filter for Inline Fan, Grow Tent, Hydroponics, Pre-Filter Included, Reversible Flange

Product ID: 487232942

Details

Brand
MARS HYDRO
Compatible Devices
Air Cleaner
Item Weight
6 Pounds
Material
Activated
Number of Items
2

🌿1050+ Virgin Australian Charcoal

💨210 CFM Airflow Rating

🛡️Heavy-Duty Pre-Filter Cloth

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€ 324.09

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Description

🌬️ Elevate your grow space with the ultimate odor control powerhouse!

BREATHE EASY GROW BETTER - Optimized 210 CFM airflow rating perfectly balances powerful ventilation with whisper-quiet operation.
PURE AIR ZERO COMPROMISE - Premium 1050+ Virgin Australian activated charcoal ensures 100% filtered airflow for unmatched odor elimination.
VERSATILE FIT FOR EVERY SETUP - Reversible flange and 4-inch inline fan compatibility make installation seamless in any grow tent or hydroponic system.
ECO FRIENDLY EASY MAINTENANCE - Machine washable pre-filter cloth means less waste and hassle, keeping your environment fresh and sustainable.
BUILT TO LAST DESIGNED TO PROTECT - Heavy-duty aluminum and dual galvanized steel mesh pre-filter traps debris and extends carbon life.

The MARS HYDRO 4 Inch Carbon Filter features premium Australian virgin charcoal for superior odor absorption, a robust 210 CFM airflow capacity, and a durable pre-filter system. Designed for inline fans in grow tents and hydroponic setups, it offers reversible flange installation and easy maintenance with a washable pre-filter, ensuring clean, fresh air and long-lasting performance.

Specifications

ASIN	B09QBS8NLG
Best Sellers Rank	#1,128,974 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #8,229 in Water Purifier Accessories
Brand	MARS HYDRO
Brand Name	MARS HYDRO
Compatible Devices	Air Cleaner
Customer Reviews	4.7 out of 5 stars 131 Reviews
Item Weight	2.72 kg
Manufacturer	MARS HYDRO
Manufacturer Part Number	4 inch carbonfilter
Material	Activated Charcoal, Aluminum , Steel
Material Type	Activated Charcoal, Aluminum, Steel
Model Number	4 carbonfilter
Number of Items	2
Product Grade	new
Unit Count	1.0 Count

Reviews

A**I

Good purchase

Was a bit sceptical before buying it but was delivered before promised time and original item

5.02.2026

D**P

Gute Qualität

Erfüllt seinen Zweck.

10.12.2025

J**S

Great for 3d printers

Got his after getting a centauri Carbon 3d printer and reading about possible micro plastics and VOC's in the air , read having a window open wasn't sufficient, so for my peace of mind got this. Seems to be working , hard to tell. Can't smell the machine now so must be doing something

1.04.2026

A**R

No smells

I've used the competition to this in the past..but this is every bit as good as SF.no smell and working well. Ill buy again.

2.04.2026

J**L

Clean air

I purchased this to scrub there out take air from my grow tent! The scrubber does a great job! I’m only a month in so we will see how long it holds up for

29.04.2024

S**E

Perfect

18.02.2026

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