24" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel border-radius: 8px

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Actual Filter Size – 13 3/4"w x 15 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 26" duct opening (measured at the opening)

+ Product Details Size – 8" x 14" or 14" x 8" is the size for the duct opening measurement only

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24" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel border-radius: 8px+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 14" OR 14" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 13. 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