Product review (1 stars): The filters I received were defective. The filter medium ...
The filters I received were defective. The filter medium inside the canister was loose. When water runs through the filter, there is low flow and severe vibration in the water lines. They are unusable. I am in the process of requesting a refund. Update:  DiscountFilterStore processed my request and is giving me a refund without needing to return the filters. Wow, that was fast & on a Sunday. The filters may not be good, but DiscountFilterStore has excellent service.