14" x 16" or 16" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter and its seamless drop-in installation

and its seamless drop-in installation process ensures effortless setup

14" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover

actual front end outer dimensions are approximately 20 5/8" width X 24 5/8" height

+ Product Details Size – 14" x 18" or 18" x 14" is the size for the duct opening measurement only

14" x 16" or 16" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter and its seamless drop-in installation+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 16" OR 16" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 15. 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