12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe + Product Details Perfect Fit

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

Made of strong ABS plastic

75"H – fits a 10" X 4" duct opening

+ Product Details Outer dimensions: – fits a duct opening

+ Product Description Enhance your HVAC system with our Aluminum Return Filter Linear Bar Grille

12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe + Product Details Perfect Fit+ 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