22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades making it perfect for both

making it perfect for both residential and commercial installations

actual front end outer dimensions are approximately 20 5/8" width X 38 5/8" height -

actual front end outer dimensions are approximately 30 5/8" width X 24 5/8" height

All of these grills have dampers

+ Product Details Size – 28"w X 26"h is the size for the duct opening measurement only

22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades making it perfect for both+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 30" OR 30" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 29. 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