NOT KNOWN DETAILS ABOUT ELECTRONIC AIR CLEANER

I would like to generate extra airflow and create cleaner air. am i able to remove the five″ electrostatic cartridges as well as 1″ pre filter and insert a four″ pleated merv8 air filter in its place? Or would I have to remove The complete electrostatic unit altogether and change it with an everyday pleated air filter slot? The most importan