GermGuardian Genuine Carbon Filter Replacements for Use with FLT400 Filter E for AC400 Series Air Purifiers, 4-Pack FLT11CB4

I purchased the air purifier for these filters shortly after getting a puppy that was irritating my allergies and it improved the air quality overnight for me! These filters fit perfectly just as the one it came with from the factory. I’ve used these filters for over 6 years now and will continue to no questions. The price is very fair for a good quality filter.

Good quality for the price.

Filters well

Apparently, I read the description incorrectly as I actually thought I was getting at least one filter with it, not pre-filters. So what you’re going to get is a bunch of activated carving coated pre-filters which are basically a quarter inch deep and flexible but pleaded Box like filters. I really need to replace the box type filter and hopefully I will find one of those soon but at least for now I have a pile of carbon and filters

It definitely helps keep out the dirt in the air.

Wish lasted longer and were easily cleaned. Must change monthly as they start to fall apart

The filter does not control sound but does work well.

These are great filters. They really do help take the cooking smells out of the air.

Not work

Expensive flimsy filters without any HEPA filter