Review on 🔳 Nispira Activated Carbon Pre Filter for Holmes AER1 Air Purifier HAPF30AT HEPA Air Filter - 9.5” x 4” x 0.25” (Pack of 4 Carbon Filters) by Marvin Short

for those who say these filters don't fit like the old ones. Don't think these are PRE-FILTERS. They are designed to be mounted in front of the original filters. They are NOT intended to replace the original foam filter that comes with the cleaner behind the front cover. These are pre-cut charcoal sheets. Designed to eliminate odors in the air. Personally, I haven't noticed much difference in smell in my room where the tray is located. However, thanks to them, the original Aer1 filters last much longer. Makes the air purifier much quieter without restricting airflow. Very happy with this purchase and will buy again.