Pre-Filter Replacement for Blueair Blue Pure 411, 411+, 411 Auto and Mini

EFFECTIVE FILTRATION: Cabiclean 4 pack 411replacement pre-filter for Blueair Blue Pure 411, 411+, 411 Auto, and Mini Air Purifier, effectively prevents larger particles from reaching your main filter, extending its life and maintaining optimum filter performance for longer. | EASY TO INSTALL: Simply remove the older and dirty fabric pre-filter and replace it. Vacuum the fabric or toss it in the washing machine whenever it needs cleaning. | PIECES INCLUDED: The package includes 4 replacement pre-filter, and 2 different colors: lunar rock, and Diva Blue. Add a splash of color to your room. | PREMIUM QUALITY BUT AFFORDABLE PRICE: We deliver high-quality, durable, and long-lasting replacements, allowing the filter to last longer. They are an efficient investment. In order to improve the performance of the air purifier, please replace or wash the pre-filter every 2-3 months. | CUSTOMER SERVICE: If you have any problems with the filter fitting your air purifier, please contact us through our Amazon home page.