Exchangeable Pre-filter for Blue 511i, available in different colours.

Blueair goes to any length to increase cleaning efficiency – even if it means putting spandex on their air purifiers. The fabric pre-filter catches larger particles, extending the life of the main filter. Just vacuum it or put it in your washing machine when it needs cleaning. Instead of making their pre-filter in only one colour, you can choose from a selection of vibrant fabrics. That’s way more fun! Match your personality or redecorate your room. Or buy multiple and change colours according to your mood? All it takes is a few seconds

Compatible with Blue 511i.