Product Description:
Technology:
Utilizes Blueair's proprietary HEPASilent™ dual filtration technology, combining mechanical and electrostatic filtration for efficient particle removal with reduced noise and energy consumption. 
Filtration:
Features a three-layer cylindrical filter system including a washable fabric pre-filter, a pleated particle filter, and a carbon-impregnated fabric layer for capturing particles down to 0.1 microns and trapping light household odors. 
Smart Features:
Includes auto mode (adjusts fan speed based on PM2.5 levels), sleep mode, and three fan speeds. It can be controlled via two buttons on the unit or through the Blueair smart air purifier app, offering features like scheduling, air quality monitoring, and accurate filter tracking. 
Coverage:
Recommended for rooms up to 439 sq ft for optimal air changes (4 times per hour), but can clean larger spaces like 1,054 sq ft in 30 minutes or 2,107 sq ft in 1 hour. 
Noise Level:
Operates quietly, ranging from 23 dB on low to 50 dB on high fan speed, making it suitable for bedrooms. 

Material Description:
Pre-filter:
The washable pre-filter is made of 100% polyester with a stretch panel of 94% polyamide and 6% spandex. It is customizable and available in various colors, with the Stockholm Fog (grey) pre-filter often included, and other colors like Limestone, Moss, and Sand sold separately. 
Main Filter:
The main filter media consists of advanced polypropylene fibers for particle filtration and an activated carbon mesh layer for gas and odor removal. 
Body:
The main cylindrical body is covered with a fabric material, while the top section is made of good quality white plastic.