Product review (5 stars): Fit great and sturdier than the originals
Don't be afraid to buy these, they work great.  The rubber coating on one face adds some welcome structure to the paper.  To extend the life of any paper filter, I soak in vinegar and rinse well once a week and flip over every other time as others have noted.  Also drain the water that they sit in each time as it is filled with evaporated deposits, too.