34" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w26h26 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 36" or 36" x 6" duct opening (measured at the opening)

Every register is carefully packaged with shrink wrap and cardboard backing to ensure it arrives in perfect condition

designed for superior airflow (up to 95%) and easy filter access

+ Product Details Size - 28"w X 4"h is the size for the duct opening measurement only

34" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w26h26 + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 6" Or 6" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 5. 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 Made