EC Silenced Inline Fan by SigilVentus — Whisper-Quiet Grow Tent Ventilation with Speed Controller
SG-S0594
- Low stock - 1 item left
Pairs well with
The SigilVentus EC Silenced Fan wraps a full EC inline fan inside a steel silencing housing lined with fire-proof acoustic foam, with the motor suspended on piano-wire springs so vibration never reaches your ducting. The result is quiet extraction without airflow loss — up to 1065 CFM from the 250mm model — and every fan ships with an 8-preset speed controller in the box. Available in 150mm, 200mm and 250mm duct sizes.
Specifications by Size
| 150mm (6") | 200mm (8") | 250mm (10") | |
|---|---|---|---|
| Max Airflow | 350 CFM | 710 CFM | 1065 CFM |
| Static Pressure | 51 mmH₂O | 53 mmH₂O | 52 mmH₂O |
| Max Speed | 5000 RPM | 3800 RPM | 3200 RPM |
| Power | 40W | 75W | 150W |
| Max Noise | 42.9 dBA | 37.7 dBA | 43.5 dBA |
| Motor | EC motor, 0-10VDC / PWM / potentiometer speed signals | ||
| Warranty | 3 years (manufacturer) | ||
Enter your tent dimensions and get a matched fan size in seconds.
Fan Size Calculator- Connect the speed controller before powering up — SigilVentus EC fans do not run without a speed control connection
- Hang the fan from straps rather than hard-mounting it, and seal duct joints — most "fan noise" complaints are actually air leaks and vibration transfer
- Size up and run slower — a 200mm at half speed moves the same air as a flat-out 150mm at a fraction of the noise
How to Install It
Pairs Well With
Swap the manual controller for temperature-based automation — holds your set temp by trimming fan speed.
Smart EC Fan Controller ProTemperature and humidity control with timing functions — the full climate brain for this fan.
SigilVentus Carbon FiltersMatched 150/200/250mm filters — this fan has the static pressure to pull through them without breaking a sweat.
SigilVentus Inline FanThe non-silenced sibling — same EC motor and controller compatibility in a lower-profile housing.
Common Questions
Does it come with a speed controller?
Yes. Every fan includes an 8-preset speed controller, a 5-metre control cable, a full-speed plug, and adaptors for RJ45 and 3-pin controllers.
Will it run without a controller connected?
No. SigilVentus EC fans require a speed control connection before power up — connect the included controller (or a Smart Controller) first, then plug in.
Can it pull through a carbon filter?
Yes. All three sizes deliver 51-53 mmH₂O of static pressure, which is what matters for filtered and long duct runs — airflow holds up under restriction instead of collapsing.
Which size do I need for my tent?
The 150mm suits most single tents up to around 1.2x1.2m, the 200mm covers larger tents and filtered runs, and the 250mm handles big rooms and multi-tent setups. Use our Fan Size Calculator above for a match based on your exact dimensions.
Does it work with the SigilVentus Smart Controllers?
Yes. Both the Smart EC Fan Controller and the Controller Pro connect directly and automate speed from temperature (and humidity on the Pro).
Select Size
Quiet Air, Serious Flow
Controller included, ready to hang. Free shipping over $499*.