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

Pleased

I just changed my pre-filter after 3-4 months of use. I changed it based on time rather than a change in machine operation. It was extremely dirty; it looks like it did its job well. It protected the more expensive HEPA filter. Will buy more when needed.

The description is somewhat misleading as this is not a four pack but one large sheet which can be cut into numerous filters. It looks like you can get 10 filters out of this one sheet but you have to cut it with scissors to match. I took the old filter out, lined it up on the sheet, cut it and then placed it on the Velcro that exists on the inside filter. It’s easy to do but first I was confused so I wanted to write this review. The description is somewhat misleading as this is not a four pack but one large sheet which can be cut into numerous filters. It looks like you can get 10 filters out of this one sheet but you have to cut it with scissors to match. I took the old filter out, lined it up on the sheet, cut it and then placed it on the Velcro that exists on the inside filter. It’s easy to do but first I was confused so I wanted to write this review. This ends up being a great buy since you get 10 filters, not four, and prolong the life of your hepa filter inside.

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.

Just what I needed

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!

Exactly what they advertised.