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

Works great! No complaints.

Had a problem receiving on time. Dates kept changing. But with whats been going on with deliveries may not be sellers fault. Product was good and am satisfied. Would use seller again.

The filter itself seems to be ok but I’m no scientist. The carbon pre filter is thin. Almost pointless to have it on there. You can see right through it and tears wasily. You have to have the filter unit inserted a specific way (even after installing with the arrows the right way and following directions on the package) or it will not sit correctly on the pressure safety switch. Time will tell how well these work. Used on a germ guardian.

These filters last a long time and with the replacement filter cover they last even longer.

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.

They didn’t fit as advertised

Great deal!

Fit great!

They are not long enough to make contact so that they machine will run.

After installing the filter. The air purifier wouldnt turn on. Found that it wasnt hitting the safety switch correctly. So it wouldnt turn on had to put a shim on the bottom switch so it would work. I have 2 and had to do the same for both. Otherwise works.