24" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8in diameter Actual Filter Size – 35

Actual Filter Size – 35 3/4"w x 25 3/4" x 1"

+ Product Details Size – 18"w X 26"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 4"h is the size for the duct opening measurement only

Crafted with top-notch quality aluminum

+ Product Details Outer dimensions: 15

24" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8in diameter Actual Filter Size – 35+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 14" OR 14" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 13. 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