Product review (1 stars): DO NOT BUY - Not as advertised (too large for Whirlpool fridges)
BEWARE!  Don't be fooled!  These do NOT fit Whirlpool refrigerators that use the filter model number in the title.  They are too small and will get stuck in your fridge. We also noticed they only kept the fridge fresh for about 4 weeks (and should last 6 months).  We had to use a screwdriver to pry them out.  There was no response to return request unless I wanted to pay return shipping (which made my refund almost nothing).  If you ask me, if a product doesn't live up to its description, the seller should cover return shipping.