Classic 500/600 Series DualProtection Filter

GREAT product

I've been buying these for years for my air cleaners. I'm glad they are still making these because my air cleaners are working just fine even though they are getting old. When I change these out, I can see just how much they trapped so that I don't have to breathe contaminants in the air. Highly recommend Blueair.

Running great!

I bought the 200 and the 503 air purifying system when I moved from my home to a smaller space where I knew they would be perfect. This was 11 years ago and are still running like new with absolutely no noise. I am amazed how quiet and well they work. I never write reviews but I really do love these Blueair filter systems and so glad I still can still depend on them in my home space. I am very careful whenever I move them to not drop or jar them. I buy my filters from Blueair on the subscription plan. I'm so glad I have these filters in my home. My home space air feels so good.

Average Filter

Average filter and overpriced product