34" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Crafted with a solid steel

Crafted with a solid steel body

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

Actual Filter Size – 35 3/4"w x 27 3/4" x 1"

The total outer size of this grille is the listed size plus 2 and 5/85"

Measuring 3" in diameter for the duct opening

34" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter Crafted with a solid steel+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 36" OR 36" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 35. 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