12" x 20" or 20" x 12" Cube Core Eggcrate Return Air Grille Color_Aluminum powder-coated finish adds a touch

powder-coated finish adds a touch of elegance while also being scratch-resistant

75"H – fits a 14" X 10" duct opening

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

Actual Filter Size – 17 3/4"w x 25 3/4" x 1"

actual front end outer dimensions are approximately 12 5/8" width X 8 5/8" height

12" x 20" or 20" x 12" Cube Core Eggcrate Return Air Grille Color_Aluminum powder-coated finish adds a touch+ Product Details Size 12" x 20" or 20" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 21. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing