24" x 26" or 26" x 24" Cube Core Eggcrate Return Air Grille 10in diameter + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 10" OR 10" x 22" duct opening (measured at the opening)

+ Product Details Size – 12" x 34" or 34" x 12" is the size for the duct opening measurement only

Design – This airflow control component are made to connect to a drop ceiling lay-in diffuser grille

+ Product Details Size - 25"w X 24"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 2"h is the size for the duct opening measurement only

24" x 26" or 26" x 24" Cube Core Eggcrate Return Air Grille 10in diameter + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in + Product Details Perfect Fit & Easy Sizing Designed for a 22" x 10" OR 10" x 22" duct opening (measured at the opening) + Product Details Size – 12" x 34" or 34" x 12" is the size for the duct opening measurement only