30" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter white [Outer Dimensions: 26

[Outer Dimensions: 26

actual front end outer dimensions are approximately 20 5/8" width X 10 5/8" height

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actual front end outer dimensions are approximately 10 5/8" width X 20 5/8" height

30" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter white [Outer Dimensions: 26+ 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