24" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Width_20in 75"H – fits a 14"

75"H – fits a 14" X 8" duct opening

For added protection

+ Product Details Size – 14" x 22" or 22" x 14" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 36 5/8" height

24" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Width_20in 75"H – fits a 14"+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 12" OR 12" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 11. 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