30" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Anodized Aluminum + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 8" or 8" x 12" duct opening (measured at the opening)

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

+ Product Details Size – 22"w X 25"h is the size for the duct opening measurement only

this guard is designed to provide maximum protection against tampering while maintaining a clean and professional appearance

30" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Anodized Aluminum + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 20" OR 20" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 19. 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