34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 12" Round Duct Pipe Great emphasis has been invested

Great emphasis has been invested in the design of this product to prevent it from kinking in sharp bends & turns and to hold steady and at full diameter in all applications

or commercial environments

For 14" Round Duct Opening - Spiral or Flex

+ How To Measure A Grille Measure the size of the vent opening

+ Product Details Size – 24"w X 16"h is the size for the duct opening measurement only

34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 12" Round Duct Pipe Great emphasis has been invested+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 24" Or 24" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 23. 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