4 Packs FLT4825 HEPA Replacement Filter B Compatible with AC4825 AC4300 AC4800 AC4900 AC4850, 4 True HEPA Filters & 6 Activated Carbon Pre-Filters

Replacing these filters periodically really helps the Germ Guardian do a great job filtering the air. I have purchased 3 Germ Guardians for my house and just recently bought a fourth for my Son who suffers from allergies in the summer.

Buy, buy, buy!! Get these ASAP!!!! They are just as good or even better than the name brand. HUGE money saver!!

These filters are top notch. They fit perfectly and last a long time. I will purchase these over and over verses the other filters.

As others have stated, the FLT4825 filter is not compatible with Germ Guardian Air Purifier. The original filter has a plastic rim that snaps into the purifier. The filter I received has foam liners on the top and bottom of the plastic panel, which prevents the filter from snapping in place, and stops the purifier from turning on.

Great product for the price point. The new filters were an easy change and were easy to replace.

These do not work with Germguardian HEPA Filters. They fit fine but my filter will not turn on with these filters installed. When I install the old filter it works just fine, the outer casing on these is cardboard while the originals are plastic. The appears to be two switches that have to be made up for the filter to function one for the filter installed and the other for the door shut. Can oly assume these filters do not trip the filter switch.

These filters were ordered as replacements for those on our two air filter units. They were installed as easily as OEM pieces,both the folded paper and the HEPA units.

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I have 3 rescue dogs and keep it going in the living room 24/7. You should see the filter every week. It really helps as I have allergies

Great price for filters I use all the time.