28" x 28" Cube Core Eggcrate Return Air Grille Aluminum - Cube Core designed for superior airflow control Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

designed for superior airflow control and noise-free operation

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

actual front end outer dimensions are 19" Width X 13" Height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 28" or 28" x 8" duct opening (measured at the opening)

+ Product Details Size – 25"w X 30"h is the size for the duct opening measurement only

28" x 28" Cube Core Eggcrate Return Air Grille Aluminum Cube Core designed for superior airflow control Compatible With Duct 7in Applications This sheet metal DDAG A 1212 designed for superior airflow control and noise free operation + Product Details Size 26"w X 26"h is the size for the duct opening measurement only