16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set 4" X 14" Is The

4" X 14" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

Actual Front End Outer Dimensions Are 14" Diameter

+ Product Details Size – 32"w X 26"h is the size for the duct opening measurement only

Adjustable airflow control – Adjustable airflow control: The system allows users to customize the amount of air supply

+ Product Details Size – 16"w X 18"h is the size for the duct opening measurement only

16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set 4" X 14" Is The+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 22" OR 22" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 21. 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