Product review (1 stars): Too Thin to Work
When we ordered these, we expected a carbon filter that would actually work.  Well, were we surprised!  While they do fit our range hood, they really do not provide much filtering.  When you hold them up to the light, you can actually see through the filter.  The filter media is so sparse as to not provide satisfactory filtering.

Do not buy these if you expect them to filter much air in your range hood.