16" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades Actual Filter Size – 9

Actual Filter Size – 9 3/4"w x 13 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 28" or 28" x 8" duct opening (measured at the opening)

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

10" Diameter Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 8"w X 16"h is the size for the duct opening measurement only

16" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades Actual Filter Size – 9+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 14" OR 14" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 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