32" x 36" or 36" x 32" Cube Core Eggcrate Return Air Grille Color_Aluminum + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 20"w X 34"h is the size for the duct opening measurement only

+ Product Details Size – 25"w X 18"h is the size for the duct opening measurement only

+ Product Details Size – 10"w X 20"h is the size for the duct opening measurement only

from 4" to 20"

+ Product Details Size – 26"w X 18"h is the size for the duct opening measurement only

32" x 36" or 36" x 32" Cube Core Eggcrate Return Air Grille Color_Aluminum + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 20"w X 34"h is the size for the duct opening measurement only + Product Details Size – 25"w X 18"h is the size for the duct opening measurement only