30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter return grille text-align: center

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Actual Filter Size – 31 3/4"w x 7 3/4" x 1"

+ Product Details Size - 4"w X 22"h is the size for the duct opening measurement only

75" width X 27

The crank handle lever makes it easy to adjust to every weather situation

30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter return grille text-align: center+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 6" OR 6" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 5. 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