34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coat the actual front end outer

the actual front end outer dimensions are 8" in diameter

+ Product Details Size – 10"w X 12"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 27 3/4" x 1"

Each grille is securely shrink-wrapped with a cardboard backing to prevent damage during shipment

+ Product Details Size – 20"w X 50"h is the size for the duct opening measurement only

34" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coat the actual front end outer+ 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