Recently had AC installed in our house after years of saving. And learning many things as we go. I choose a mid level filter to begin with. It looks well constructed. And I believe it will filter well. The fit and seal was perfect. What more there is to tell I dont know yet.
I ordered the custom made filter since my original filters were always loose in the blower filter box. After ordering the proper sized filter, the dust has noticeably been reduced and the system is operating more efficiently.