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

Very easy to use and they work great! Thank you

Easy to replace

So, let me start with a little background. I have 2 dogs and 2 cats at home. The dogs track in a lot of dust from being outside and we have 2 litter boxes constantly in use. So my air purifier is constantly working. Anyway, i ordered this 4-pack to replace the single black filter that came in the original. These ones were definitely thicker and the size was *almost* the same. These were about a centimeter too long. However, i used regular scissors and then they were perfect. They seem to be working just like the original. It still sucks in the odors, fur, and dust like the original. It already has a tan color on it because of all the dust and its only been a few days. (yuck!) Overall, this is a great deal and just needs a minor and simple modification. I dont think spending 3x more for the other filters would have been worth it. Overall, Id recommend.

Price is reasonable for a filter. An original one from GermGuardian is slightly overpriced. Red light was blinking after three months. I checked a filter. There were lots of dust and small light bright color particles on a filter. Check a photo. e.g.) I vacuumed my room every two weeks, so I didnt except there were lots of dust in my room I detached an original filter and replaced it with a filter by CFS. It was slightly longer than an original filter, but it did not have any problems for installment. After the replacement, I pressed a UV button for 3-5 seconds to reset a indicator (red to green). Please check all photos here.

These are thicker than other filters I have bought before which is nice because it actually helps filter. Some filters I have bought are so small that they don’t really filter. These were definitely worth the price, especially since I won’t have to buy filters for awhile.

This is the best value for the pre-filters Ive found.

Direct replacement, fits perfectly.

Easy to attach. I am able to vacuum it clean and only have to change it every third month. I vacuume it the month after changing. Easy to do but I did put tape on edges to make it last one more month before changing. These pre filters are inexpensive and worth it.

I hadnt bought these because I hate how much money it takes to keep up with the HEPA filter in my filter-fan, but I indulged because my allergies have been so bad and I have a dog, plus I hoped these would lengthen the lifespan of my filter. They do! And actually, there are five of these in one box and theyre washable so you can make them last longer! Plus, carbon filtering is so good for you. Worth it.

The filters were folded over in open plastic bag without labeling.