20" x 32" or 32" x 20" Cube Core Eggcrate Return Air Grille Aluminum + Product Details Size -

+ Product Details Size - 12"w X 28"h is the size for the duct opening measurement only

+ Product Details Size – 28"w X 34"h is the size for the duct opening measurement only

+ Product Details Size - 32"w X 30"h is the size for the duct opening measurement only

4" X 14" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

20" x 32" or 32" x 20" Cube Core Eggcrate Return Air Grille Aluminum + Product Details Size -+ Product Details Size 20" x 32" or 32" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" X 33. 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