12" x 26" or 26" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 + Product Details Size -

+ Product Details Size - 30"w X 25"h is the size for the duct opening measurement only

flex-shrink: 0

75"H – fits a 20" X 10" duct opening

75"H – fits a 14" X 12" duct opening

12" x 26" or 26" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 12" x 26" or 26" x 12" duct opening (measured at the opening), with actual outer dimensions of 14. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 11. 75" x 25. 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