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 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 10" duct opening (measured at the opening)

actual front end outer dimensions are approximately 20 5/8" width X 16 5/8" height

Solid Base for Stability – Built with a solid base for reliable mounting and stability

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

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 + Product Details Perfect Fit+ 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