6" x 14" or 14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 16.5"] 8" Diameter + Product Details Size -

+ Product Details Size - 24"w X 6"h is the size for the duct opening measurement only

+ Product Details Size – 10" x 30" or 30" x 10" is the size for the duct opening measurement only

These grilles and registers give you an extra measure of quality that you can point out to your family members and house guests

Tough reinforced metallized polyester jacket - tear and puncture resistant

16" Diameter Is The Size For The Duct Opening Measurement Only

6" x 14" or 14" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 16.5"] 8" Diameter + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 14" or 14" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 13. 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 Made