12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter flat stamped steel modern look and superior functionality

modern look and superior functionality

actual front end outer dimensions are approximately 16 5/8" width X 24 5/8" height

+ Product Details Outer dimensions: 11

+ Product Details Size – 16" x 18" or 18" x 16" is the size for the duct opening measurement only

Simplified Installation: Our Radial Damper ensures easy setup

12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter flat stamped steel modern look and superior functionality+ Product Details Perfect Fit & Easy Sizing Designed for a 12" x 28" or 28" x 12" duct opening (measured at the opening), with actual outer dimensions of 14. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 11. 75" x 27. 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