This light cover was used on many Rangaire, Broan and other brands. You may see the brand name OMEGA on the power unit of your range hood. Rangaire models that use this cover are: 90039 PM39521 PM44221 The cover is 3-7/8 x 7-5/8 inches. How can you be sure it will fit? Easy. It fits into an opening that is 3-1/2 x 7 inches. IN STOCK READY TO SHIP! SOME OF THE HOODS THAT USE THE L SHAPED FILTERS ALSO USE THIS LIGHT COVER.