24" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 8" or 8" x 10" duct opening (measured at the opening)

actual front end outer dimensions are 13" Width X 13" Height

+ Product Details Size – 16" x 26" or 26" x 16" is the size for the duct opening measurement only

75"H – fits a 24" X 8" duct opening

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24" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 34" OR 34" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 33. 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