14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum + Product Details Size -

+ Product Details Size - 26"w X 30"h is the size for the duct opening measurement only

Whether installed on a sidewall or ceiling

+ Product Details Size – 16" x 30" or 30" x 16" is the size for the duct opening measurement only

back blades made of black plastic for reduced air noise and discreet appearance

+ Product Details Size – 26" x 28" or 28" x 26" is the size for the duct opening measurement only

14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum + Product Details Size -+ 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