30" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Aluminum /* Adding space between bullet

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actual front end outer dimensions are approximately 10 5/8" width X 26 5/8" height

actual front end outer dimensions are approximately 15

+ Product Details Size - 32"w X 36"h is the size for the duct opening measurement only

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30" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Aluminum /* Adding space between bullet+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 32" OR 32" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 31. 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