Blueair Blue Pure 211

This is a Blueair Blue Pure 211 air purifier, a model designed to clean air in large rooms up to 540 square feet.The unit features a washable fabric pre-filter—shown in gray here—which captures large particles to extend the life of the main filter.It operates with three fan speeds and includes a filter-life indicator to alert you when it is time to replace the main particle and activated carbon filter.