34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grille Adjustable airflow control - by

Adjustable airflow control - by rotating the middle disk

+ Product Details Size - 14"w X 8"h is the size for the duct opening measurement only

High Quality – Heavy-gauge all-steel construction

For example

34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grille Adjustable airflow control - by+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 22" Or 22" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 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