I use these filter cartridges in my Watts Whole House filters in my basement as shown in my attached picture. As you can see I built two in series with the 1st filter being "sediment" and the 2nd filter being "charcoal". Both fit perfectly in canisters and work great as my water pressure is consistently around 68psi! The Aqua Pure filters here are really really good at removing a lot of build up, love them and highly recommend them.
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