Product review (5 stars): This one fit our Whirlpool frig easily, and was essentially the same one that we ...
Fit perfectly without any problem at all!  Do not buy the other overpriced filters (~$50).  This one fit our Whirlpool frig easily, and was essentially the same one that we took out.  I would recommend this filter to anyone, and I just placed an order for another one as a spare.