Product review (5 stars): Cheap and easy fix
Solved our problem of the bottom freezer leaking water on the floor. Apparently it's super common with the Whirlpool brands; our fridge is KitchenAid and about 5 years old. An appliance man was going to charge almost $300 to do this job, of course he was going to add some special additional part as well. Instead we bought this part and had our handyman install it for one hour's pay of $30. You can probably do it yourself; we're just not that handy. He watched a video (of which they are plenty) and did it easily. The part that took the longest was using the hair dryer to melt all the ice. Sure enough our duck valve was clogged, but we haven't had any issues since.