32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Steel + Product Details Size -

+ Product Details Size - 18"w X 10"h is the size for the duct opening measurement only

ensuring your space stays dry and secure

75"H – fits a 20" X 20" duct opening

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32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Steel + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 8" OR 8" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 9. 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