Honestly, I can't install it myself as my ceilings are 10' at least and that's where the filter goes. I have to request maintenace for my apt community and have the guy install it. BUT--I used to buy these when I lived in Florida and they were what I needed with my allergies. I can lterally see the dust blown all over my furniture with the cheap see thru filters that maintenance uses here and they don't get replaced until 4 months of usage. Not acceptable to me. I'll be having my Filter Buy installed in the next day or two. I can barely breathe as it is right now.