32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 12" Round Duct Pipe Actual Front End Outer Dimensions

Actual Front End Outer Dimensions Are 5

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 18" OR 18" x 20" duct opening (measured at the opening)

3 * insulation density is 30kgs/cbm = 0

[Outer Dimensions: 20

32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 12" Round Duct Pipe Actual Front End Outer Dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 10" OR 10" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 9. 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