14" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White + Product Details Size –

+ Product Details Size – 14"w X 25"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 36"h is the size for the duct opening measurement only

Ring Base Design – Allows for easy installation without removing the thermostat

+ Product Details Size – 24"w X 24"h is the drop ceiling HVAC supply grille size - for T-Bar lay-in

14" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 10" or 10" x 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 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