14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 } /* LIST SPACING */

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Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 4" duct openings

+ Why HVAC Premium HVAC Premium has been providing superior quality service for many years

+ Product Details Size – 20"w X 4"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 24" OR 24" X 16" duct opening (measured at the opening)

14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 } /* LIST SPACING */+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 6" or 6" x 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 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