This product may take up 1-2 weeks from order date to ship

It is recommended to replace your cartridges every year to obtain the best quality in water.

Replacing the filters for the first time: When you make a filter change and reinstall the filters. Please note that each filter has 3 lines across. The long center line matches to a raised piece on the male end that has the small "O” ring on it. This notched piece fits into the small grove on the center piece.