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Spider Farmer Air Filtration Kit 4 Inch, Inline Duct Fan with RJ12 Speed Humidity Controller, Carbon Filter Combo, 25 Ft Ducting, Ventilation System Kit for Grow Tents, Hydroponics, Indoor Gardening

  • Based on 988 reviews
Condition: New
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$135.99 Why this price?
Holiday Deal · 15% off was $159.99

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026

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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Sunday, Nov 9
Order within 11 hours and 11 minutes
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Size: 4 Inch RJ12 Speed Controller


Features

  • Upgrade RJ12 Interface: Compatible with GGS Controller and Power Strip. Enable intelligent remote control and automation via the Spider Farmer App
  • Powerful Inline Fan: EC motor ensures energy efficiency, 27 watts, 205 CFM airflow, 26.8 dB noise. Lightweight ABS blades increase airflow by 40%. Speed controller with 8.2 ft wire for easy control. ETL/FCC listed, safe to use
  • High Performance Carbon Filter: Heavy-duty construction with stainless steel flanges ensures durability. RC412 activated carbon for superme odor control. 38 mm thick carbon layer enhances absorption. Pre-filter captures large particles and extends life
  • 25Ft Flexible Duct: Made of high-quality aluminum and PVC, double-layer design; steel wire reinforced for durability; Passed GB8624B1 test, safe to use. Stainless steel clamps are sturdy and corrosion proof
  • Complete Ventilation System: Provides excellent air circulation and eliminates odors. Easy installation; versatile setup options. Save money with a inline fan & filter combo kit, no need to buy separate parts

Product Dimensions: 17.48 x 12.95 x 14.96 inches


Item Weight: 13.2 pounds


Manufacturer: hydroponic-ventilation-equipment


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 9

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.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • A Great Buy!
Size: 4 Inch RJ12 Speed Controller
Product was just what I needed! Works great at cooling down my grow room. Would defiinitely recommend!
Reviewed in the United States on October 9, 2025 by Cal Davis

  • Good enough
Size: 4 Inch RJ12 Speed Controller
Works as described
Reviewed in the United States on July 3, 2025 by Kurt

  • Needs better instructions
Size: 6 Inch GGS Controller
Easy setting up, but wish they gave better instructions on how to put together. I had to figure some of it out myself.
Reviewed in the United States on May 7, 2025 by Melinda

  • Great fan
Size: 4 Inch RJ12 Speed Controller
I have a 10x10 area wrapped in panda plastic and this fan on 30% will pull the plastic in. Air inlet opening is 6x4 inches. Works very well. If you are using it with a ac 5 or 10 controller make sure to upgrade the app and firmware the firmware is located in the setup of the controller.
Reviewed in the United States on July 27, 2025 by Sh

  • Amazing Value for $$!
Size: 4 Inch RJ12 Speed Controller
I've been growing for over about two years now and decided to give Spider Farmers ventilation a shot. I have to say I am VERY impressed! Came with everything I needed to install in the box, and it all fit like a glove. The carbon filter did a wonderful job of not making the neighbors smell what I am growing inside the grow room. I've tried many other ventilation brands, but have to say this is by far my favorite one! It's not too loud, and it moves air very well. Shipping was very fast and I received it in a timely matter. 10/10 Would buy again! ... show more
Reviewed in the United States on November 16, 2021 by trey trey

  • Keeps my grow tent air circulated well
Size: 4 Inch RJ12 Speed Controller
Easy to set up for beginners even. I have mine both on the outside of the tent to allow for more room for the plants and light. Top notch system! My humidity and temp are perfect. Grab one of these on a sale it’s well worth it
Reviewed in the United States on November 23, 2024 by Ash

  • Economical kit but be warned, fan sounds like its failing. Filters already failed and wont scrub.
Size: 4 Inch RJ12 Speed Controller
Happy with the purchase but after three months of use the plastic inline fan sounds like its started to fail. I think one of the fins is loose? Unsure but makes odd sound. The inline charcoal filter DID fail! Not scrubbing at all. Reached out to Spider Farmer and haven't received an answer yet. Review will be updated once they resolve these issues. ... show more
Reviewed in the United States on June 2, 2025 by Amazon Customer

  • Easy to use!
Size: 4 Inch RJ12 Speed Controller
Very easy to set up and use. Value for money: Great value!
Reviewed in the United States on June 26, 2025 by Sabrina Isch

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