16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter 75" width X 21

75" width X 21

+ Product Description Introducing the 3-coned supply grille for a T-bar lay-in

actual front end outer dimensions are approximately 38 5/8" width X 34 5/8" height

positioning supply and return grills accordingly

actual front end outer dimensions are 22" width X 6" height

16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter 75" width X 21+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 36" OR 36" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 35. 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