22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades provide precise damper control and

provide precise damper control and superior air dispersion

making it perfect for both residential and commercial installations

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

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

Actual Filter Size – 33 3/4"w x 13 3/4" x 1"

22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Fixed Blades provide precise damper control and+ 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