34" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 addEventListener('click'

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actual front end outer dimensions are approximately 28 5/8" width X 34 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 32" OR 32" x 28" duct opening (measured at the opening)

How To Measure A Grille

+ Product Details Size – 28"w X 12"h is the size for the duct opening measurement only

34" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 addEventListener('click'+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 8" Or 8" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 7. 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