The Amana WF30 water filter has been replaced by the 12527304 refrigerator water filter. This compatible replacement filter can be found here:
http://www.waterfilters.net/Amana-12...0_p_0-319.html
Companies such as Amana often replace older models of filters with newer ones. Sometimes this is due to technology upgrades, material upgrades or other manufacturing upgrades.
Amana has declared that the 12527304 water filter replaces the WF30 refrigerator water filters. This means that the 12527304 will perform the same as or better than the WF30 refrigerator water filter.
If there are any major difference in compatible replacement filters it will be noted.