16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Grille w18h18 accordion-content')

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+ Product Details Size – 26"w X 14"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 32 5/8" height

16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Grille w18h18 accordion-content')+ Product Details Size 16" x 22" or 22" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 23. 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