34" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 16" Or 16" x 34" duct opening (measured at the opening)

10"w X 8"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 28" x 34" or 34" x 28" is the size for the duct opening measurement only

Crafted from high-quality

+ Product Details Size – 36"w X 14"h is the size for the duct opening measurement only

34" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 28" Or 28" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 27. 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