TiO2 Treated HEPA Filter Replacement for Electrolux Aerus Guardian Air Purifiers, True High-Efficiency HEPA Filter with 4-Step Filtration Compatible with Models F159B, F159A, 00498

I don't write many reviews but had to share my experience. No, these filters aren't cheap so it's been a while since I replaced mine. We've had a problem trying to get rid of the dog smell in our house. We washed everything, used Febreeze on everything and nothing worked. As a last-ditch effort, I decided to try this upgraded filter for our Lux Guardian air purifier. I put this in early in the day. My wife and I went out for a few hours and when we came back, the dog smell was completely gone and has been since the purchase! It really is amazing and I've already set a reminder to replace this every 6 months. Thanks for the excellent product!