Product review (3 stars): Measurments are right, they aren't supposed to be the same size as the mesh/screen filter the hood came with! they're smaller!
I want to clear up the confusion about the dimensions of the filter. I can't believe all the different variations in the measurements people are posting except that perhaps some folks cannot read a tape measure. These filters are designed to clip on over the inside of the screen/wire mesh filters the range hood comes with. You remove those, then using the clips provided in this filter pack, you clip these onto the mesh ones. Then you re-install them with the charcoal filter IN (you do not see it) and the mesh facing outwards. Because these clip ONTO the top side of the mesh filter, they are SUPPOSED to be slightly smaller in size. They FIT INTO the mesh frame so are NOT the same size as the mesh frame. SO if you are measuring  your mesh frame and thinking you should be ordering a charcoal filter the same size, that is INcorrect!