Product review (5 stars): Go with these factory filters!!!
Exact replacement for my Whirlpool refrigerator. I had tried the cheaper Home Depot store brand before but the water did not taste near as good as is does with this factory filter. To me it is worth the extra $$ to buy these compared to the HD brand. My refrigerator came with part #4396918 which was later changed to #4396508. I had read that this filter would not work as a replacement for the two older filters. They worked perfect & looked identical to the older models.