8" x 24" or 24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 26.5"] 10in diameter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 14" or 14" x 6" duct opening (measured at the opening)

this HVAC vent duct cover ensures durability and reliability

if your hole is 20" wide by 14" tall

actual front end outer dimensions are 25

+ Product Details Size - 20"w X 25"h is the size for the duct opening measurement only

8" x 24" or 24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 26.5"] 10in diameter + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 24" or 24" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 75" x 23. 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