26" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 6in 75"H – fits a 12"

75"H – fits a 12" X 6" duct opening

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 30" or 30" x 12" duct opening (measured at the opening)

with actual outer dimensions of 22

+ Product Details Size – 32"w X 22"h is the size for the duct opening measurement only

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26" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 6in 75"H – fits a 12"+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 24" OR 24" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 23. 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