16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling + Product Details Size -

+ Product Details Size - 14"w X 22"h is the size for the duct opening measurement only

this grille is a testament to high standard craftsmanship

Superior Airflow Control: Built-in damper lets you control how much air enters your room

+ Product Details Size – 24" x 30" or 30" x 24" is the size for the duct opening measurement only

16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter ceiling + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 26" OR 26" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 25. 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