34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grille + Product Details Size –

+ Product Details Size – 3"w X 10"h or 10"w X 3"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 14"h is the size for the duct opening measurement only

Adjustable airflow control - by rotating the middle disk

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 16" OR 16" x 24" duct opening (measured at the opening)

75" width X 27

34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grille + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 22" Or 22" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 21. 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