30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 18" duct opening (measured at the opening)

+ Product Details Size - 12"w X 14"h is the size for the duct opening measurement only

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Elevate both functionality and aesthetics with the Louver Floor Register

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30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall + Product Details Perfect Fit+ 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