AQUA CREST RC 4 EZ-Change Premium Water Filtration Replacement Cartridge, Replacement for all Culligan EZ Change Water Filter Systems, Including RCEZ-4, IC-EZ-4, US-EZ-4, RC-EZ-3, RC-EZ-1 (Pack of 1)

Easy to change.

Seems to work great and at a fraction of the cost of the major brand name.

DO NOT BUY As you can see it is missing a critical part. On the original there is a hole beside the inlet and outlet. This is what turns the valve on when you twist it into place. This supposed copy doesn’t have that so it doesn’t work. It also took 2 weeks to arrive and now I have to send it back and order a different brand.

The taste of our water has improved greatly since utilizing this water filter. We found that we do need to run at least 1-2 gallons of water through the new filter before the water tastes the best to us, but we use those first couple of gallons to water plants, so it's not just running down the drain. This water filter has been a great addition to our house I will definitely purchase this water filter again.

Very satisfied with this filter, easy to install. BONUS: it says 500 gallons in the description, but the product is actually 2000 gallons.