34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter + How To Measure A

+ How To Measure A Grille Overall Size:

+ Product Details Size - 18"w X 36"h is the size for the duct opening measurement only

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+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

screws same color as vent cover

34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Diameter + How To Measure A+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 22" Or 22" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 21. 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