32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Black actual front end outer dimensions

actual front end outer dimensions are approximately 28 5/8" width X 20 5/8" height

Actual Filter Size – 33 3/4"w x 19 3/4" x 1"

3/8" - 4223 PSI

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 24" or 24" x 12" duct opening (measured at the opening)

32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Black actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 8" OR 8" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 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