FreAire KN6391RGB Air Purifier: CADR, Noise, Coverage & Specs
Last updated: Aug 22, 2026
Overview
FreAire Air Purifiers for Bedroom Up to 1086 ft², KN6391RGB, Black | HEPA Air Purifier with 360° Airflow, 20 dB Sleep Mode, 3 Ambient Lights & Aroma Pad for Dust, Smoke, Pollen & Pet Dander
CADR and room size
CADR is not published for this model in our sources.
Filtration
What filter does it use?
HEPA.
Noise
How loud is it?
Minimum reported noise: 20 dB.
Smart features
Does it have Wi-Fi?
No published Wi-Fi or app control in our sources.
3-level high-efficiency filtration system, Filters smoke, pollen, pet dander, odors, and particles as small as 0.3 µm, RGB ambient lights, Sleep mode with 20 dB low noise
Specifications
- Manufacturer claimed coverage
- 1086 sq ft
- Noise
- 20 dB
- Filter type
- HEPA
- Dimensions
- 6.1"D x 6.1"W x 9.7"H
- Weight
- 3.06
- Wi-Fi / app
- No
Comparisons
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources. See methodology.