14" x 16" or 16" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Width_20in Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 11 3/4" x 1"

actual front end outer dimensions are approximately 14 5/8" width X 20 5/8" height -

actual front end outer dimensions are approximately 28 5/8" width X 10 5/8" height

actual front end outer dimensions are approximately 10 5/8" width X 18 5/8" height

14" x 16" or 16" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Width_20in Actual Filter Size – 23+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 16" OR 16" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 15. 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