10" x 32" or 32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 34.5"] Return Pre-flared ends with nuts are

Pre-flared ends with nuts are for simple and easy installation

The total outer size of this grille is the listed size plus plus 2 and 5/8"

+ Product Details Size - 10"w X 32"h is the size for the duct opening measurement only

Achieve the perfect airflow with adjustable control by rotating the middle disk

Actual Filter Size – 17 3/4"w x 11 3/4" x 1"

10" x 32" or 32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 34.5"] Return Pre-flared ends with nuts are+ Product Details Perfect Fit & Easy Sizing Designed for a 10" x 32" or 32" x 10" duct opening (measured at the opening), with actual outer dimensions of 12. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 9. 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