12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe allowing you to take control

allowing you to take control of indoor air circulation without complications

75"H – fits a 10" X 4" duct opening

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 22" or 22" x 6" duct opening (measured at the opening)

+ Product Details Size – 34"w X 14"h is the size for the duct opening measurement only

12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe allowing you to take control+ Product Details Perfect Fit & Easy Sizing Designed for a 12" x 30" or 30" x 12" duct opening (measured at the opening), with actual outer dimensions of 14. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 11. 75" x 29. 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