24" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES White + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 8" x 24" or 24" x 8" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 27 5/8" height

+ Product Details Size - 8"w X 14"h is the size for the duct opening measurement only

If you are looking to enhance your project with a top-of-the-line unit

+ Product Details Size - 4"w X 36"h is the size for the duct opening measurement only

24" X 20" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER EASY AIR FLOW LINEAR BAR GRILLES White + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 8" x 24" or 24" x 8" is the size for the duct opening measurement only actual front end outer dimensions are approximately 27 5 8" width X 27 5 8" height