20"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 19.875"H] return filter Premium Airflow Efficiency - High-performance

Premium Airflow Efficiency - High-performance cube core eggcrate design allows 95% airflow efficiency

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+ Product Description Maximize your home’s airflow with this premium Air Supply Grille air supply grille

+ Product Details Size – 12"w X 18"h is the size for the duct opening measurement only

allowing you to choose the best option to suit your airflow needs

20"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 19.875"H] return filter Premium Airflow Efficiency - High-performance+ Product Details Size 20"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 875" width X 19. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was