A cheap 6 in EC fan with a full-featured controller. Its power draw and full-speed noise are not published.
Amazon $69.90
A cheaper 6 in CLOUDLINE with less airflow and a little more noise than the S6. A fine fit for a tent that does not need the full 425 CFM.
- 352 CFMAirflow
- 65 WPower
- 34 dBANoise
- ECMotor
Price checked November 8, 2026. As an Amazon Associate we earn from qualifying purchases.
- Ten-speed controller included, and it plugs into AC Infinity’s smart controllers later
- Costs more than budget EC fans that move similar air
The AC Infinity CLOUDLINE A family
Every AC Infinity CLOUDLINE A model we rank, smallest first. Ratings compare each against its own duct size.
| Model | Airflow | Rating | Price |
|---|---|---|---|
| AC Infinity CLOUDLINE A4 | 165 CFM | 2.8/5 | $79.99 |
| AC Infinity CLOUDLINE A6 (this one) | 352 CFM | 3.0/5 | $89.99 |
| AC Infinity CLOUDLINE A8 | 724 CFM | 2.7/5 | $139 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its duct size. How we rank explains each one.
Specifications
| Model number | AI-CLA6 |
|---|---|
| Performance | |
| Duct size | 6 in |
| Rated airflow | 352 CFM |
| Static pressure (not scored) | 394 Pa |
| Power at full speed | 65 W |
| Power figure | Max power draw |
| Average power (not scored) | 35 W |
| Airflow per watt | 5.4 CFM/W |
| Price per 100 CFM | $25.57 |
| Noise at full speed | 34 dBA |
| Controls | |
| Motor | EC |
| Controller | 10-speed controller |
| Speeds | 10 |
| Temperature and humidity control | No |
| Phone app | No |
| Timer or cycle modes | No |
| Build | |
| Housing | Plastic |
| Ingress rating | IP44 |
| Voltage | 100-240 V |
| Warranty | 2 years |
Alternatives in this duct size
A quiet 6 in EC fan for 4x4 tents, best for owners already using Spider Farmer’s GGS controller.
Amazon $115.99A code-approved metal fan for bathroom, kitchen or radon exhaust where a contractor wants a long-lived, listed unit.
Amazon $201Compare
Compare the AC Infinity CLOUDLINE A6 with any other inline duct fan →
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