germguardian Guardian Technologies FLT41002PK FLT4100 HEPA Replacement Filter E for AC4100, AC4100CA AC4150BL, AC4150PCA, 2 pack, Black Air Purifier

It works as expected. My last filter I changed at 90 days just because of COVID-19 pandemic. It wasnt gunky dirty but there was visible dirt just from running it a few hours a day. I wanted to change it to get rid of any virus germs that could have been lingering there.

This fit my GermGuardian model AC4100 like a glove. Easy to install - simply pop off the back over, remove the old filter, pay attention to the arrows and put the cover back on. Authentic filter replacement; will purchase again.

Great product. Used to replace filters on the air cleaner I bought that doesnt make there filters any more...) :

Works great

Work well

I love my air purifier but having cats and living in New England means being ready for dander and pollen. I noticed a burning smells after several months of the original filter. The smell went away after replacing it with this one. An air purifier is one of the best things you can add to your bedroom.

Product was as advertised. It fits great, works well in the air cleaner. The only problem was it was kind of pricey.

This filter assembly fit the air purifier perfect. Carbon filter is normal thickness. Product is as described

Cleans air well.

Been using the little air purifier for over a couple years now and its awesome. The filters are descent price and easy to find, so big plus. And they really do help keep the air clean in our bedroom. Definitely recommend.