34" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade 75"H – fits a 20"

75"H – fits a 20" X 18" duct opening

+ Product Details Size - 32"w X 24"h is the size for the duct opening measurement only

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Installation – Easy to Install

34" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade 75"H – fits a 20"+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 10" Or 10" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 9. 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