14" x 20" or 20" x 14" Cube Core Eggcrate Return Air Grille fixed bar 10"w X 4"h Is The

10"w X 4"h Is The Size For The Duct Opening Measurement Only

This simple adjustment reduces HVAC strain

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This thoughtful design ensures optimal air circulation for your HVAC system

Total outer size of this grille is

14" x 20" or 20" x 14" Cube Core Eggcrate Return Air Grille fixed bar 10"w X 4"h Is The+ Product Details Size 14" x 20" or 20" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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