10" x 28" or 28" x 10" Cube Core Eggcrate Return Air Grille w10h10 actual front end outer dimensions

actual front end outer dimensions are approximately 38 5/8" width X 20 5/8" height -

+ Product Details Size – 22"w X 29"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 28"h is the size for the duct opening measurement only

+ Product Details Size – 12" x 20" or 20" x 12" is the size for the duct opening measurement only

10" x 28" or 28" x 10" Cube Core Eggcrate Return Air Grille w10h10 actual front end outer dimensions+ Product Details Size 10" x 28" or 28" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 29. 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