18" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Size –

+ Product Details Size – 24"w X 12"h is the size for the duct opening measurement only

This versatile solution enhances air supply and adds a touch of class to your space

+ Product Details Size - 34"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - The listed 10" diameter refers specifically to the size of the duct opening

+ Product Details Size - 16"w X 25"h is the size for the duct opening measurement only

18" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 18" x 32" OR 32" x 18" duct opening (measured at the opening), with actual outer dimensions of 20. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 17. 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