32" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe This versatile diffuser is adaptable

This versatile diffuser is adaptable to various airflow needs

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height -

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 34" OR 34" x 30" duct opening (measured at the opening)

+ Product Details Size - 6"w X 14"h X 2"d (for duct opening measurement only)

32" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe This versatile diffuser is adaptable+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 20" OR 20" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 17. 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