30" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown actual front end outer dimensions

actual front end outer dimensions are approximately 18 5/8" width X 38 5/8" height

We carry sizes the big box stores don't

actual front end outer dimensions are approximately 26 5/8" width X 8 5/8" height

Experience noise-free airflow and a healthier environment thanks to our grille's innovative design

actual front end outer dimensions are approximately 12 5/8" width X 32 5/8" height -

30" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 24" OR 24" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 23. 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