30" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades textContent = '+'

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+ Product Details Size - 26"w X 20"h is the size for the duct opening measurement only

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For 10" Round Duct Opening - Spiral or Flex

+ Product Details Size - 26"w X 34"h is the size for the duct opening measurement only

30" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades textContent = '+'+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 24" OR 24" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 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