32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Round Duct Pipe 75"H – fits a 20"

75"H – fits a 20" X 8" duct opening

+ Product Details Size – 24"w X 16"h is the size for the duct opening measurement only

if your hole is 20" wide by 14" tall

actual front end outer dimensions are approximately 21

32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 14" Round Duct Pipe 75"H – fits a 20"+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 8" OR 8" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 9. 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