6" x 24" or 24" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 26.5"] Insulated Line actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 30 5/8" height

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+ Product Details Size - 30"w X 24"h X 2"d (for duct opening measurement only)

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6" x 24" or 24" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 26.5"] Insulated Line actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 24" or 24" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 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 Made