14" x 25" Cube Core Eggcrate Return Air Filter Grille for 1" Filter flat stamped steel Filter Size - 9

Filter Size - 9

5" width x 13

but still very thin

HVAC Premium has been providing superior quality service for many years

+ Product Details Size - 36"w X 34"h is the size for the duct opening measurement only

14" x 25" Cube Core Eggcrate Return Air Filter Grille for 1" Filter flat stamped steel Filter Size - 9+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 25" OR 25" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 27. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 24. 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