- Inline Fan R4 4" (190 CFM, 2300 RPM)
- Variable Speed Controller
- 4" Carbon Filter (1200+ RC 412 Grade, 4" x 14")
- 8-foot Heavy-Duty Ducting with Triple-Layer Construction
- 2 Stainless Steel Clamps
- Mounting Hardware and Installation Instructions
Vivosun Inline Fan R4 Air Filtration Kit - 4" Duct
starting from 0% interest financing from
/mo.
- Delivers 190 CFM of airflow at 2300 RPM for small grow spaces
- Uses 1200+ RC 412 Australian Virgin Charcoal for maximum odor scrubbing
- Optimized for 2x2 or 3x3 ft grow tents with a 4-inch duct diameter
- 1-year after-sale service coverage
- View More Details
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Who This Is For
- You are adding a filtration kit because the aroma from your 2x2 tent is escaping into the rest of your house.
- You are installing a speed controller because fixed-speed fans pull too much humidity out during the early stages.
What We Found
- The R4 is quiet enough that you can actually hold a conversation right next to the tent while it runs at full speed
- We noticed the 1200+ RC charcoal in this kit lasts significantly longer than the generic filters found in budget kits
- The triple-layer ducting is stiffer than the cheap stuff, so it does not collapse or whistle under high suction
What Users Say
- Growers who move their tents into living areas say the 31 dB rating meant they could finally sleep in the next room
- Users tell us the external speed controller saved them from having to reach inside the hot tent to adjust airflow
- Buyers who swapped out old ducting say these triple-layer walls finally stopped the light leaks and small air tears
Vivosun Inline Fan R4 Air Filtration Kit - 4" Duct
Struggling with heat, humidity, and odors in your grow space? The VIVOSUN Air Filtration Kit R4 4" is your all-in-one solution for powerful, quiet, and reliable ventilation. This complete three-part system includes everything you need for effective air purification and odor control, making it perfect for growers seeking a straightforward, dependable setup.
At its core, the Inline Fan R4 moves 190 CFM of air at 2300 RPM while operating at a whisper-quiet 31 dB. The included variable speed controller allows you to precisely adjust airflow from 0-100%, adapting perfectly to each stage of your grow. This kit is an essential component for any high-performance VIVOSUN grow tent, especially sizes like the 2' x 2' or 3' x 3'.
Eliminate unwanted smells with the superior 1200+ RC 412 carbon filter, packed with Australian Virgin Charcoal. The durable, triple-layer ducting ensures longevity and can handle temperatures from -22°F to 266°F, providing a secure and efficient pathway for air. It's one of the most reliable inline fan systems for maintaining a pristine growing environment.
What's Included
Features
🔄
Powerful Airflow
Delivers 190 CFM at 2300 RPM with an ultra-quiet operation under 31 dB.
🎛️
Variable Speed Control
Adjustable controller provides precise airflow from 0-100% for optimal ventilation.
🌿
Superior Odor Control
1200+ RC 412 Australian Virgin Charcoal effectively eliminates odors and particulates.
🔧
Heavy-Duty Construction
Triple-layer ducting with steel wire support handles temperatures from -22°F to 266°F.
📦
Complete System
All-in-one kit includes the fan, filter, ducting, clamps, and all mounting hardware.
⚡
Efficient Power Usage
Operates at just 59W for cost-effective, continuous performance.
Specifications
| Specification | Value |
|---|---|
| Model | Inline Fan R4 Combo |
| Size | 4 Inch |
| Airflow | 190 CFM |
| Fan Speed | 2300 RPM |
| Noise Level | <31 dB |
| Power Usage | 59 W |
| Material | Plastic |
| Carbon Filter Grade | 1200+ RC 412 |
| Ducting Length | 8 feet |
| Controller | Variable Speed Controller |
Compare VIVOSUN R-Series Kits
Support & Manuals
Warranty
The VIVOSUN Air Filtration Kit R4 includes 1-year after-sale service coverage and offers a free return within 30 days of delivery for complete peace of mind.
FAQs
How does the variable speed controller work?
The variable speed controller allows you to adjust the fan speed from 0-100% of its maximum 190 CFM capacity. Simply turn the dial to increase or decrease airflow based on your growing phase needs. Lower speeds are ideal for seedlings and young plants, while maximum speed provides optimal ventilation during flowering stages.
What size growing space is this system suitable for?
This 4-inch, 190 CFM system is ideal for small to medium grow tents, including 2'x2' setups and up to 4'x4' tents. The system effectively handles spaces with ducting runs up to 8 feet while maintaining strong airflow performance, making it perfect for personal-scale growing operations.
How effective is the carbon filter at eliminating odors?
The 1200+ RC 412 grade carbon filter uses Australian Virgin Charcoal for superior odor elimination. At 4" x 14", it provides a substantial surface area to effectively remove pungent smells and particulates from your growing environment. The high-quality charcoal ensures consistent performance throughout its lifespan.
What makes the ducting heavy-duty?
The ducting features triple-layer construction with flexible steel wire supports that maintain shape and prevent collapse. A PET core is sandwiched between fire-retardant aluminum layers, providing durability and safety. This construction handles extreme temperatures from -22°F to 266°F while remaining flexible for easy installation.
How does this kit help manage grow room climate?
This kit is crucial for managing your environment. By exhausting hot, humid air and pulling in fresh air, it helps you maintain the ideal conditions for plant growth. For a detailed guide, check our article on the perfect grow room temperature and humidity.
How quiet is the R4 fan during operation?
The Inline Fan R4 operates at less than 31 dB, making it quieter than a whisper and virtually silent in most environments. Even at full 190 CFM capacity, the noise level remains minimal, ensuring a discreet operation.
Is this system compatible with other VIVOSUN equipment?
Yes, the R4 Air Filtration Kit uses standard 4-inch connections that are compatible with other VIVOSUN equipment and grow tent systems. The kit eliminates compatibility concerns by providing all necessary components together, ensuring everything works perfectly out of the box.
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Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
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