Review on High-Quality Nispira True HEPA Air Filter Replacement for Holmes AER1 HAPF30AT Air Purifier - Pack of 4 HEPA Filters + 4 Carbon Filters by Jennifer Bondy

Just a Holmes filter is $15.99 at our local Menards store. I chose 2 packs of regular Revain filters. Aside from the missing logo on one side, they appear to be exactly the same: same frame, same density filter. I leave my filter on 24/7 because it's a cat litter room. I bought a roll/leaf filter and cut my own as I change them every 2 weeks. Nevertheless, the large filter has to be changed every few months. These filters fit just like the old ones. Price and quality are great! I'm glad I listened to the positive reviews and not the negative ones! Highly recommended.