Product review (5 stars): grease filter for nutone allure hood,
range hood filter part NO; BPS1FA30 , FOR QS1 AND WS1 RANGE

the filter is as good as the original filter.
It fits perfectly on my nutone allure hood.
the dimensions described on amazon page was different from the packaging  which is an error.
the  actual dimensions on the package shows;
  11-7/8 x 14-3/8
which is the actual dimensions.
and it is the same as my old filter.