12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 6" actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 10 5/8" height

High Quality – High-quality steel with counter-sunk screw holes (screws included) and no sharp edges

Actual Filter Size – 24 3/4"w x 19 3/4" x 1"

Install it with ease on your ceilings to transform your space

designed to optimize your air distribution

12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 6" actual front end outer dimensions+ 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