Product review (1 stars): This Filter is not a direct 4396508 replacement!!!!!
Purchased this product for my Whirlpool side by side 6 months ago. Put them on the shelf since I had just replaced the filter. This filter in not a direct replacement for the part# #4396508. The business end of this filter is totally different and will not work in my refrigerator. Since I purchased a three pack and did not try them right away looks like I am just out of the money. Don't waste your money like I did if you need a 4396508.
https://www.amazon.com/gp/product/B00KGHWLIQ/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1<a data-hook="product-link-linked" class="a-link-normal" href="/Aqua-Fresh-WF285-Replacement-for-Whirlpool-4396508-Pack-of-3/dp/B00KGHWLIQ/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Aqua Fresh WF285 Replacement for Whirlpool 4396508 (Pack of 3)</a>