28" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade Actual Filter Size – 15

Actual Filter Size – 15 3/4"w x 24 3/4" x 1"

+Product Description Introducing our Modern Floor Register Grille with Dampers – a perfect blend of elegance and functionality for your home

Actual Filter Size – 31 3/4"w x 21 3/4" x 1"

75"H – fits a 20" X 4" duct opening

actual front end outer dimensions are 15" Width X 15" Height

28" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum Adjustable Curved Blade Actual Filter Size – 15+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 20" OR 20" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 19. 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