28" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Bar + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 12" or 12" x 6" duct opening (measured at the opening)

Powder-coat finish – smooth

+ Product Details Size – 22"w X 25"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 38 5/8" width X 26 5/8" height -

actual front end outer dimensions are approximately 26 5/8" width X 12 5/8" height -

28" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Bar + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 34" OR 34" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 33. 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