Blue Pure 211+ (White) at Amazon for $371.99 The Blue Pure 211+ also uses an optional fabric pre-filter to help trap larger particles and extend the life of the filter inside the unit.

Blueair Blue Pure Max air purifiers will be available on Amazon and Blueair.com later this month with other select retailers to follow. Blue Pure 411a Max ($139): for rooms 219-526 square feet* ...