14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall + Product Details Size –

+ Product Details Size – 30"w X 22"h is the size for the duct opening measurement only

+ Product Details Size – 20" x 28" or 28" x 20" is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 7 3/4" x 1"

5" Wide x 12" Tall x 2

actual front end outer dimensions are approximately 25

14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter sidewall + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 14" x 34" OR 34" X 14" duct opening (measured at the opening), with actual outer dimensions of 16. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 13. 75" x 33. 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