10" x 26" or 26" x 10" Cube Core Eggcrate Return Air Grille Color_R-4.2 Yellow + Product Details Size –

+ Product Details Size – 20" x 34" or 34" x 20" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 38 5/8" width X 14 5/8" height -

+ Product Details Size - 34"w X 22"h is the size for the duct opening measurement only

875" height

10" x 26" or 26" x 10" Cube Core Eggcrate Return Air Grille Color_R-4.2 Yellow + Product Details Size –+ Product Details Size 10" x 26" or 26" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 27. 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