10" x 14" or 14" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 16.5"] Compatible With Duct 12in + Why HVAC Premium HVAC

+ Why HVAC Premium HVAC Premium has been providing superior quality service for many years

Adjust the airflow to your preference by simply opening or closing the top panel

Actual Filter Size – 29 3/4"w x 17 3/4" x 1"

+ Product Details Size – 28"w X 12"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 10"h is the size for the duct opening measurement only

10" x 14" or 14" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 16.5"] Compatible With Duct 12in + Why HVAC Premium HVAC+ Product Details Perfect Fit & Easy Sizing Designed for a 10" x 14" or 14" x 10" duct opening (measured at the opening), with actual outer dimensions of 12. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 9. 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