32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w14h14 The 1/2" black insulation

The 1/2" black insulation

+ Product Details Outer dimensions: 15

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 28" or 28" x 8" duct opening (measured at the opening)

+ Product Details Size – 6" x 20" or 20" x 6" is the size for the duct opening measurement only

32" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w14h14 The 1/2" black insulation+ 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