14" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 2-Way actual front end outer dimensions

actual front end outer dimensions are 26

actual front end outer dimensions are approximately 41

Actual Filter Size – 35 3/4"w x 27 3/4" x 1"

actual front end outer dimensions are 21

14" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 2-Way actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 8" or 8" x 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 7. 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