18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8" Diameter actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 32 5/8" height

screws same color as vent cover

+ Product Details Size - 28"w X 32"h is the size for the duct opening measurement only

+ Product Description When it's time to upgrade your HVAC Vents in your house

18" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 8" Diameter actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 18" x 14" OR 14" X 18" duct opening (measured at the opening), with actual outer dimensions of 20. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 17. 75" x 13. 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