Product review (5 stars): Perfect fit!
I picked up 4 of these filters after moving into the house and discovering that I could not get them at Lowes.  They were a perfect fit for my 10" sediment filtration system.  For my household, the filter lasts about 5 - 6 months before I see a drop in water pressure.  When changing the filter, I also soak the filter housing in a mild bleach solution to kill any bacteria that may exist in the housing.  10 minutes later I'm back with great pressure and a new filter in place.