Product review (1 stars): I had the plumber return and he installed the second filter from the two pack and it worked fine. I need instructions on how to
The first filter was installed by a professional plumber at the time my RO system filters were installed. The WF700 filter was defective and leaked in my refrigerator. I had the plumber return and he installed the second filter from the two pack and it worked fine. I need instructions on how to go about getting a refund. I still have the defective filter and can return it if necessary.