28" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade Actual Filter Size – 27

Actual Filter Size – 27 3/4"w x 31 3/4" x 1"

+ Product Details Size – 32"w X 22"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 20" or 20" x 6" duct opening (measured at the opening)

angle the louvers up for efficient cooling

+ Product Details Size – 12"w X 10"h is the size for the duct opening measurement only

28" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade Actual Filter Size – 27+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 32" OR 32" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 31. 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