Fette Filter - True HEPA Filter Compatible with GermGuardian FLT4100 models AC4100/AC4150BL/AC4150BL Air Purifiers (Filter E)

I really appreciate that this filter two-pack saves me money and gets the job done as well as the filter with the same brand name as the air purifier.

This little filter will clean and deodorize any room in the house quickly and efficiently. I love it!

The filters came well packaged and very fast, and look identical to the original filter that is twice the price. This two pack allows me to change the filter every three months instead of the recommended six, at the same price. We keep the unit on pretty much 24/7 in a closed bedroom and six months is too long. So this is a great option for us. I can’t tell a difference. They look the same and have the same heft as the original. Fit was perfect. We use the air filter machine in our son’s room and a clean filter has already made a huge difference in his allergies and being able to sleep.We are very pleased and don’t see why we’d ever pay fo the name brand. Buy this one and you’ll not regret it.

These work great with my Germ Guardian machines! I love the quality and usually get the two packs. I really like that it comes with the pre-filter as well!

Really like the filters

A fraction of the cost of the OEM replacement filters and they fit perfectly.

These fit my Germ Guardian air purifier perfectly. I was happily surprised to find that they include a total of 4 charcoal pre-filters, which will come in handy since the pre-filter needs to be changed more often than the hepa filter. I was also happy to find that the frame is card board and not plastic. Hooray for less plastic waste!

Great value. Filters work just like the original ones for a lot less $$ :)

They are identical. I like these better than the name brand simply because the black part of the filter can be washed out separately if need be.