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A GrowBright 4" Inline Fan & Carbon Filter Combo
Product Number: ODR-GB4CMB
GrowBright 4
4 Inch Inline Fan Bullett Points
4 Inch Carbong Filter Bullett Points
Click image for enlarged view


THIS IS THE REAL DEAL! Not a homemade filter! As seen in Hydroponic Retailers across the country! This filter uses real activated carbon, not burnt coconut fiber as other cheap and homebuilt filters.

You get both the 4” Activated Carbon Filter and a matching 4" GrowBright 170cfm Inline Fan.


With this GrowBright 4" fan (170 cfm)/ Activated Carbon Filter and flange combo you can easily eliminate odors in the indoor garden. Carbon Filters work by using super fine virgin charcoal that literally filters out odor particles from the air. If odor is an issue for you, you cannot get any better odor control than a carbon filter.

Activated Carbon Filter

Activated Carbon Filters are constructed with a "packed bed" design to give consistent performance, long life (12 to 18 months), and are completely maintenance free. The packed bed design prevents the formation of preferential channels which can allow untreated air through the system. This unique design gives these filters a larger surface area for significantly lowered pressure drops.


Effective treatment requires the exchange of air in the growing area in a period of 5 minutes. Compute your requirements by multiplying the width times the length times the height of your growing area to obtain the total cubic feet. Divide this number by 5 to determine the proper filter size needed.


For example, if your growing area is 8 feet long by 8 feet wide by 8 feet tall, it contains a total of 512 cubic feet. To treat this area in five minutes, you would need to use a fan with a CFM (cubic feet per minute) rating of approximately 102.


This heavy-duty filter successfully eliminates odors for up to 18 months.


GrowBright 4" Inline Fan


Temperature and odor control are a breeze with the GrowBright 4" inline fan. Inline fans are perfect for carbon filters, air cooling lighting reflectors or attaching to ducting to ventilate your grow room!


The GrowBright 4” Inline fan uses 80 watts and has a cfm of 170, flange size 4”.


The GrowBright 4" fan carries a 5 YEAR WARRANTY!!!


Quiet 47db


Customize your product
No Timer ($0.00)
Single Outlet Mechanical Timer - 120v ($10.00)
Dual Outlet Mechanical Timer - 120v ($15.00)
8 Outlet Timed Surge Protector - 120v ($19.00)
Dual outlet Digital Timer - 120v ($20.00)
Add Rope Ratchets?:
No Rope Ratchets ($0.00)
1/8" Rope Ratchets - 75lb Max ($11.00)
Add a Fan Speed Controller:
No Fan Speed Controller ($0.00)
GrowBright Fan Speed Controller ($19.95)
4" Ducting:
No 4" Ducting ($0.00)
8 Feet of Durable Silver Ducting ($6.99)
25 Feet of Durable Silver Ducting ($13.95)
Duct Muffler:
No Duct Muffler ($0.00)
4" Duct Muffler ($54.95)
Optional Extended Fan Warranty:
Standard Fan Warranty ($0.00)
Extended Fan Protection - 10 Full Years! ($40.00)
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