24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 2-Way + Product Details Size –

+ Product Details Size – 18" x 34" or 34" x 18" is the size for the duct opening measurement only

The included eight-tumbler lock and supplied key provide secure access

actual front end outer dimensions are approximately 14 5/8" width X 26 5/8" height

Actual Filter Size – 15 3/4"w x 19 3/4" x 1"

this grille seamlessly drops into the designated place

24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 2-Way + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 9. 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