Product review (5 stars): Whirlpool refridgerator in grille water filter
Although this is a substitute for the original unit called for by Whirlpool, it seems to do the job. The packaging for this unit states the product # is 4396701 and is used for Whirlpool, KitchenAid, and Jenn-Air equipment. I use Amazon's 6-month subscription plan to purchase this filter.