30" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in A: Black Grilles Always Look

A: Black Grilles Always Look Sharp And Never Show DIrt & Dust Marks

actual front end outer dimensions are approximately 32 5/8" width X 8 5/8" height

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making it ideal for preventing tampering or unauthorized adjustments

+ Product Details Size - 20"w X 8"h is the size for the duct opening measurement only

30" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in A: Black Grilles Always Look+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 29. 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 Made from