20" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Adjustable Return + Product Details Size -

+ Product Details Size - 12"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 30"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 32"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 32"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 22"h is the size for the duct opening measurement only

20" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Adjustable Return + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 32" OR 32" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 31. 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