Product review (1 stars): RFC0900A is not an acceptable substitute for UKF8001
I have tried twice to write a reject notice of this lousy product RFC0900A in lieu of Maytag UKF8001 Refrigerator Filter.  The OEM will last up to a year and I have history of using the OEM product since 2005.  Received this twin pack as replacement when I thought I was ordering the original from Amazon.  Definitely not a viable replacement or substitute.  Only thing that worked right was the ability to screw it into the same slot in the refrigerator.