6" x 8" or 8" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 10.5"] w30h30 Experience noise-free airflow and a

Experience noise-free airflow and a healthier environment thanks to our grille's innovative design

+ Product Details Size – 8"w X 12"h is the size for the duct opening measurement only

Design - special "V" shaped louvers ensure 100% view block while ensuring easy un-restricted air flow

this easy-to-install grille fits seamlessly into any standard return filter opening

+ Product Details Size - 18"w X 34"h is the size for the duct opening measurement only

6" x 8" or 8" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 8.5" X 10.5"] w30h30 Experience noise-free airflow and a+ Product Details Perfect Fit & Easy Sizing Designed for a 6" x 8" or 8" x 6" duct opening (measured at the opening), with actual outer dimensions of 8. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 5. 75" x 7. 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