30" x 16" or 16" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille actual front end outer dimensions

actual front end outer dimensions are approximately 20 5/8" width X 32 5/8" height

+ Product Details Outer dimensions: 21

Actual Filter Size – 23 3/4"w x 23 3/4" x 1"

DIY projects

6" width X 11

30" x 16" or 16" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille actual front end outer dimensions+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 16" OR 16" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 15. 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