Product review (5 stars): Fits like the original, seems to work
I bought these to replace the filter in my range hood (broan 43000A).  They are identical to the original and seem to help with the cooking odor.

The bottom line is that none of these recirculating hoods work as well as a vented one, but the fresh pads make a difference.  I need to replace mine monthly, but they are pretty cheap.  It's worth it because I have a small apartment and it stinks if I don't.