Product review (5 stars): Good deal
It was good deal. I bought 1 pkg from Sears for $40+tax last time, very expensive.
This was 3 pkgs for $90. It went with my newer model refrigerator.
They recommend to change filter every 6 months. But in handbook it says it could filter for 300 gallons. When the water flow gets less or taste changes, it's time to change. I used it even after filter indicator light went purple because it tasted the same and water flow was good. when the indicator changed to red, the water started to taste a little different so I changed it.