Carbon Activated Pre-Filter 4-pack for use with the Germ Guardian FLT4825 HEPA Filter, AC4800 Series, Filter B By Complete Filtration Services

I bought this to go with the filter that it lists in the title but I had to cut it to fit the filter. Not completely compatible

They’re ok, not original the ones that came with my air purifier are not as thick, they are softer, these work but seem to make my purifier noisier.

Was a little thicker than the original filter that came with air purifier. Hopefully it doesn’t effect the function of motor or fan. I just installed it so not sure.

These are your basic charcoal filters. You do have to cut them to fit. I used them as a replacement for my air filter instead of the much more expensive ones. I change mine at least every few months. Not sure how long these will last, well see, but they are the same filters I used on my old Hepa filter and they did the job.

The filter is a great way to extend the life of my HEPA filter. Right after the 4th of July I checked the carbon pre-filter on my air purifier. The particulate matter from all the fireworks near my home had really coated the old carbon pre-filter. It was great to be able to quickly change just that bit to extend the life of my HEPA filter. Its sill important to regularly change the actual HEPA filter, but I feel that changing the charcoal pre-filter really does help to extend it for a short time

Filter for Guardian Air Purifier

These carbon filters are half the thickness of original ones sent with the hepa filter 2 pack...not what I expected.

These carbon filters came in a 4 pack for the GermGuardian FLT4825. HEPA Filter will last alot longer when using these prefilters. Excellent fit, and arrived quickly. Thank you Amazon seller for great service!

Good quality and value. fast shipping

I change this every month. Between dust, dog hair, etc. it gets pretty full by the end of the month. Seems to work.