8" x 16" or 16" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 18.5"] Insulated Line } /* TITLE TEXT */

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This grille is ideal for both sidewall and ceiling installations

+ Product Details Size - 25"w X 18"h is the size for the duct opening measurement only

and matte black

Whether you choose the modern contemporary

8" x 16" or 16" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 18.5"] Insulated Line } /* TITLE TEXT */+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 16" or 16" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 75" x 15. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum