This filter is just awesome. I own the Airpura V600 and I bought a few of these filters here on Sylvane. The filter is great. The amount of dust and particles floating around has been greatly reduced. My allergy symptoms are kept to a minimum now. Before this I was using another air purifier (with a different HEPA filter) and I can't even tell you how great this one compare vs. the other. I have been using the unit for over a month now and I have seen an excellent performance; I haven't shut down the unit ever since. I'm glad I own this product. I won't hesitate to re-order this again from this website. Excellent quality and great service from Sylvane. I'm a happy camper!