I've been using these filters for a couple of years now as a whole house sediment filter. I replaced the 801 filter that was there originally, it would clog and cause pressure loss in only a couple of months. I get six months out of these easily.
These are the real deal, actual 3M filters. Quality made and good pricing and shipppng. Nice to know that I’m getting better quality water also nice to have them come in a 2 pack.