30" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown actual front end outer dimensions

actual front end outer dimensions are approximately 12 5/8" width X 32 5/8" height -

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 22" OR 22" x 24" duct opening (measured at the opening)

+ Product Details Size – 20"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 26"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 36" OR 36" x 18" duct opening (measured at the opening)

30" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 24" OR 24" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 23. 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