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

this is an air cleaner filter. it seems to work fine.

You can reorder easily and you can wash the black filter and not have to replace the entire filter so much.

Bought these to replace the ones that came with the units. They helped reduce the odor great after smoke smell from a near by wild fire. I’d buy again for sure.

Perfect for ease and does the job

This filter is the same as the one the unit came with. It is very easy to install and is working great.

Cleans air well.

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.

Used to be much better quality- the top and bottom of the filter used to have some foam padding for a snug tight fit. Now the fit doesnt seem air tight. Also the pre-filter is shedding black debris everywhere. Its so thin and poorly made. When you put your hand on it youre fingers are covered with black debris? Was it always like this?

Had one a few years back when I worked at bestbuy and adorned them for the ability to hit it with the uv

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.