14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum + Product Details Size -

+ Product Details Size - 10"w X 28"h is the size for the duct opening measurement only

back blades made of black plastic for reduced air noise and discreet appearance

this guard is designed to provide maximum protection against tampering while maintaining a clean and professional appearance

+ Product Details Size – 16"w X 24"h is the size for the duct opening measurement only

14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 6" or 6" x 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 5. 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 Made