Product review (2 stars): Disappointed to get a size that doesn't work.
My Nutone Range Hood requires filters measuring 12 x 14 inches.  These turned out to be 11 x 15 inches.  It's not worth the hassle of going to the Post Office and sending back.  Certainly not trying to exchange as who knows what size would arrive.  I'll try to cut out the carbon and stick it in my original filters and hope that works.