34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in Adjustable airflow control - by

Adjustable airflow control - by rotating the middle disk

Tailored for Your Needs: Specifically suited for 24x24 lay-in diffusers

+ Product Details Size – 20"w X 14"h is the size for the duct opening measurement only

+ Product Details Size – 22"w X 30"h is the size for the duct opening measurement only

3/4” - 2981 PSI

34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible With Duct 12in Adjustable airflow control - by+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 14" Or 14" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 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