Lennox X1152 20X25x5" Replacement Filter Media MF1--20 ADMH900 but their tests are done

but their tests are done at 300 feet/minute

The next step is a 2-Stage Electrostatic Collecting Cell

Carbon block filter finely polishes water for high-quality beverage and food applications

Daikin  Clean Comfort  AMP-M1-1056

Aprilaire:   Models 110

Lennox X1152 20X25x5" Replacement Filter Media MF1--20 ADMH900 but their tests are doneThe Lennox X1152 MERV 10 filter is designed to work with your heating and air conditioning unit removing particulates from the air stream, protecting your equipment and your health. Conventional filters capture pollutants mainly by trapping larger particles on the filter surface, which restricts airflow. The Lennox 1152 filter draws particles as small as . 3 microns deep inside the filter, allowing maximum airflow and filtration efficiency. Features: