34" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Return Grille Easy Installation – Complete set

Easy Installation – Complete set of sponge gasket and mounting frame included

The process is intuitive: simply select the appropriate ceiling square for your grill

and utility rooms

Actual Filter Size – 19 3/4"w x 25 3/4" x 1"

+ Product Details Size – 10"w X 24"h is the size for the duct opening measurement only

34" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Return Grille Easy Installation – Complete set+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 12" Or 12" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 11. 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