Product review (3 stars): Inferior to the Original Bellow
This product definitely fit my Whirlpool duet, but was far inferior to the bellows that i took out.  The previous bellows was a fairly stiff rubber and even after 9 years of wear and tear, it still held up great.  This one is MUCH more thin and now laundry gets stuck in between the gaps (where the old one did not).  While it is a replacement part and does the job, I would say the one that came with my original Duet is much better in terms of quality.