4PADEMCG1425 Filter Media

I bought a Repo House and due to abuse and pets the house air quality was terrible, I've done many many things to improve air quality and installing a new furnace with this electrostatic air filter is really helping get the dust, pet dander, ect. out of the air, I've notice a marked reduction of dust settling around the test since I've installed the system. The filters weigh about 4-5 times more after 3 months in the system That of course is diminishing with time, I hope one day to only see a slightly grey filter when they come out. The supplier I bought it from sent the wrong filter and told me to trim the filters with scissors. I wasn't very happy about that