Flintar FLT5900 H13 Grade True HEPA Replacement Filter J, Compatible with GermGuardian Air Purifier AC5900WCA and AC5900WDLX, H13 Grade True HEPA + Activated Carbon Filter, 1-Set

You save about $20 by purchasing this aftermarket filter compared to the OEM version. The HEPA filter seems to work as good as the original filter, but the carbon filter is much lower quality. Since you need to replace the carbon filter 2-4 times before replacing the filter, I recommend getting rolls of carbon filters and cutting them to size.I will continue to purchase these filters but will probably use a better carbon filter since I have cats.

Perfect fit for my unit. I have a dog in a 1000 Sq ft apt. The kitchen and living room are open. This unit helps keep dog allergies and smell to a minimum.

This was the only “knock off” brand filter I could find for my Germ Guardian air purifier that worked. So far it has lasted just as long as GG brand filter (2 months in my 740 sq ft apartment). Same quality and you save about $20!

This is EXACTLY what I needed, after CA had those really bad fires I knew I needed a good filtration system. These filters fit perfectly! They looks like the same high quality material as the name brand ones and they cost a fraction of the amount. If you are running a air filter in your house you do need to replace the hepa filters! This worked perfect for me!

Fit just like the original air filter. Could tell the old one was clogged by the amount of air flowing out of the machine once replaced. Very happy.

This filter seems identical to previous filters I had purchased from GermGuardian. It arrived fast, fit perfectly in the machine and the price was pretty good. Very good value.

Fits the Germ Guardian Air Purifier perfectly. Seems to filter as well as the OEM filter that came with the unit.

Fit perfectly into our GermGuardian and saved us $20. Still expensive for what it is but it will do.