22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Aluminum + Product Details Size –

+ Product Details Size – 36"w X 24"h is the size for the duct opening measurement only

875" width X 21

Actual Filter Size – 24 3/4"w x 29 3/4" x 1"

+ Product Details Size – 32"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 18 5/8" width X 32 5/8" height

22" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Material_Aluminum + Product Details Size –+ 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