24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 10in + Product Details Size -

+ Product Details Size - 6"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 16" x 20" or 20" x 16" is the size for the duct opening measurement only

guaranteeing efficient ventilation throughout your space

+ Product Details Size – 28"w X 24"h is the size for the duct opening measurement only

If your duct opening is 14 inches in diameter

24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 10in + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 8" OR 8" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 7. 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