I've replaced the UKF8001 in our Maytag a dozen times without incident.  This is the first time I've put in the EDR4RXD1, and the water flow is 3-4 times slower than what we were getting with the older filter.  I measured the flow at less than 0.17 gpm compared to the stated rate of 0.78 gpm.  At the rate it's going, it will take almost 25 minutes to run 4 gallons through before using it.