6" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" x 8.5"] 14in diameter 75"H – fits a 16"

75"H – fits a 16" X 4" duct opening

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

Heavier gauge than needed

7/8" Insulated Copper Coil Line - Seamless Pipe Tube for HVAC

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