12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe 6" width X 15

6" width X 15

+ Product Details Outer dimensions: – fits a duct opening

Never Rust Plastic 2-Way Vertical Air Supply Register

actual front end outer dimensions are approximately 32 5/8" width X 14 5/8" height -

See chart below:

12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe 6" width X 15+ 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