20" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 2-Way + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 8" or 8" x 12" duct opening (measured at the opening)

actual front end outer dimensions are approximately 32 5/8" width X 16 5/8" height -

+ Product Details Size – 28"w X 6"h is the size for the duct opening measurement only

polished appearance that adds elegance to any room

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 32" OR 32" x 20" duct opening (measured at the opening)

20" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 2-Way + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 20" x 28" OR 28" x 20" duct opening (measured at the opening), with actual outer dimensions of 22. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 19. 75" x 27. 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