Variable Speed Inline Duct Fan
Variable Speed Inline Duct Fan
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Powerful airflow. Whisper-quiet operation. Built for grow rooms, hydroponics, and home ventilation.
Upgrade your grow tent, indoor garden, or workshop with our high-performance Inline Duct Fan. A mixed flow fan engineered to deliver serious airflow without the noise. Whether you're venting heat from a grow room, controlling humidity, exhausting odours through a carbon filter, or improving airflow in a bathroom, kitchen, or workshop, this fan is the smart, energy-efficient choice.
Available in 4" (100mm), 6" (150mm), and 8" (200mm) sizes, each unit ships with an external variable speed controller so you can dial in the exact airflow you need — from a gentle whisper to full power.
Why Choose Our Inline Duct Fans?
Powerful Mixed Flow Airflow Up to 553 CFM of high-pressure airflow, perfect for pushing air through carbon filters, long ducting runs, and multi-tent setups.
Whisper-Quiet Operation Aerodynamically balanced impeller and precision-engineered housing keep noise as low as 28 dB(A) — quieter than a library. Run it day or night without disturbing your home or neighbours.
Variable Speed Control Included The included external knob controller lets you adjust airflow from MIN to MAX in seconds. No more over-ventilating, no wasted energy.
Energy Efficient Low wattage motors (from just 30W) deliver maximum airflow per watt, reducing your running costs and electricity bill.
Built to Last Durable metal housing, sealed motor bearings, and a heavy-duty impeller designed for 24/7 continuous operation.
Perfect For:
- Grow tents & hydroponic grow rooms
- Carbon filter & odour control setups
- Bathroom, kitchen & basement ventilation
- Workshops, garages & home offices
- Greenhouses & commercial growing
- HVAC & general duct ventilation
Choose Your Size
| Specification | 4" / 100mm | 6" / 150mm | 8" / 200mm |
|---|---|---|---|
| Airflow | 205 CFM | 350 CFM | 553 CFM |
| Noise Level | 28 dB(A) | 32 dB(A) | 42 dB(A) |
| Motor Speed | 2700 RPM | 2500 RPM | 2000 RPM |
| Power | 30W | 50W | 70W |
| Duct Diameter | 98mm | 146mm | 196mm |
| Voltage | AC 110–240V | AC 110–240V | AC 110–240V |
| Frequency | 50/60Hz | 50/60Hz | 50/60Hz |
| Net Weight | 1.72 kg | 2.40 kg | 3.24 kg |
| Power Cord | 3-core × 1.5m | 3-core × 1.5m | 3-core × 1.5m |
| Speed Control | External knob (included) | External knob (included) | External knob (included) |
Not sure which size to choose?
- 4" (205 CFM) — Ideal for small grow tents up to 60×60cm, single-plant setups, or small rooms
- 6" (350 CFM) — The most popular choice for 1.2m × 1.2m grow tents and medium spaces
- 8" (553 CFM) — Heavy-duty performance for large grow rooms, multi-tent setups, and commercial use
Easy Installation
Compatible with standard ducting, carbon filters, and silencers. Universal mounting bracket allows horizontal or vertical installation. Plug-and-play setup — connect your ducting, plug in the speed controller, and you're ready to go.
Frequently Asked Questions
Q: Can I use this fan with a carbon filter? Yes — these fans are designed to handle the static pressure of carbon filters and ducting runs, making them perfect for odour control in grow rooms.
Q: Is the speed controller really included? Absolutely. Every Inline Fan ships with the external knob speed controller — no extra purchase needed.
Q: Can it run 24/7? Yes. The sealed motor bearings and durable construction are rated for continuous operation.
Q: Will it work with my voltage? Yes — it supports AC 110–240V, 50/60Hz, so it works worldwide.
Q: How loud is it really? At the lowest speed setting, you'll barely hear it. Even at full power, the 4" model runs at just 28 dB(A) — quieter than a whisper.
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