AC Infinity CLOUDLINE S6
#2 in 6 inFull review
The usual pick for a 4x4 or 5x5 grow tent with a carbon filter: plenty of airflow, high static pressure and quiet running.
Amazon $99$99
6 in425 CFM6.1 CFM/W30 dBA
3.1/5
A low-cost 6 in EC fan with strong rated airflow. Its power draw is not published, which keeps it below documented rivals.
- 405 CFMAirflow
- 32 dBANoise
- ECMotor
Check price at Amazon$76.99
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Low price for its rated airflow
- Metal housing and stepless speed control
Cons
- Power draw and warranty not published, so running cost is unknown
- No static pressure rating published
The Hon&Guan PRO family
Every Hon&Guan PRO model we rank, smallest first. Ratings compare each against its own duct size.
| Model | Airflow | Rating | Price |
|---|---|---|---|
| Hon&Guan PRO 4 in Inline Fan | 212 CFM | 3.2/5 | $63.99 |
| Hon&Guan PRO 6 in Inline Fan (this one) | 405 CFM | 3.1/5 | $76.99 |
| Hon&Guan PRO 8 in Inline Fan | 830 CFM | 3.1/5 | $99.99 |
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 | HI-150PE |
|---|---|
| Performance | |
| Duct size | 6 in |
| Rated airflow | 405 CFM |
| Price per 100 CFM | $19.01 |
| Noise at full speed | 32 dBA |
| Controls | |
| Motor | EC |
| Controller | Stepless speed controller |
| Speeds | Stepless |
| Temperature and humidity control | No |
| Phone app | No |
| Timer or cycle modes | No |
| Build | |
| Housing | Metal |
| Ingress rating | IP42 |
Alternatives in this duct size
VIVOSUN R6 6 in Inline Fan
#3 in 6 inFull review
A low-cost 6 in fan for bathroom, basement or tent exhaust when running cost and filter performance matter less than price.
Amazon $63.99$63.99
6 in390 CFM34 dBA
Hon&Guan 6 in EC Inline Fan HI-150EC
#5 in 6 inFull review
A high-output 6 in fan for long duct runs or a big filter where noise is not a concern.
Amazon $99.99$99.99
6 in469 CFM6.1 CFM/W55 dBA
Compare
Compare the Hon&Guan PRO 6 in Inline Fan with any other inline duct fan →
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