34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum - Cube Core and then smoothly drop in

and then smoothly drop in the grill

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 24" or 24" x 10" duct opening (measured at the opening)

+ Product Details Size - 32"w X 18"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 12"h is the size for the duct opening measurement only

making it adaptable to various airflow needs

34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum - Cube Core and then smoothly drop in+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 24" Or 24" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 23. 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