For buyers who want every automatic feature in an open lid fan at the lowest price. The unknown warranty is the main risk.
Kohree $137.77
For owners who want full automation in an open lid fan and do not need it to run in rain. The rain sensor, thermostat and remote make it close to set and forget.
- 900 CFMAirflow
- 10Speeds
- NoRain cover
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- Closes itself when rain starts, so it can be left running while you are away
- Ten speeds in both directions, a thermostat and a remote cover every way of running it
- Runs with the lid closed as a ceiling fan
- Has to close in rain unless you add a separate cover
- Costs nearly as much as covered fans from other brands
- Smoke lid only
The MaxxAir MaxxFan Plus family
Every MaxxAir MaxxFan Plus model we rank, smallest first. Ratings compare each against its own lid.
| Model | Airflow | Rating | Price |
|---|---|---|---|
| MaxxAir Maxxfan Plus 4002K | 900 CFM | 3.1/5 | $271.21 |
| MaxxAir Maxxfan Plus 4000K | 900 CFM | 3.5/5 | $253.31 |
| MaxxAir Maxxfan Plus 4500K (this one) | 900 CFM | 3.8/5 | $338.09 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its lid. How we rank explains each one.
Specifications
| Model number | 00-04500K |
|---|---|
| Fan | |
| Airflow | 900 CFM |
| Speeds | 10 |
| Blade | 12 in |
| Reversible | Yes |
| Lid and controls | |
| Rain cover | No |
| Powered lid | Yes |
| Rain sensor | Yes |
| Thermostat | Yes |
| Remote | Yes |
| Light | No |
| Fit and build | |
| Roof thickness | 2 to 6.5 in |
| Warranty | 2 years |
Alternatives in this lid
For budget buyers who want a remote and rain sensor and can live with thin documentation. The airflow claim should not be taken at face value.
Amazon $139.99For buyers who want the features of a MaxxAir Plus 4500K at a lower price. The unknown warranty is the trade off.
Amazon $209.95Compare
Compare the MaxxAir Maxxfan Plus 4500K with any other RV roof vent fan →
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