32" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Black + Product Details Size -

+ Product Details Size - 40"w X 20"h is the size for the duct opening measurement only

16" Diameter Is The Size For The Duct Opening Measurement Only

providing the flexibility to match specific ventilation requirements or personal comfort levels

installation is a breeze

actual front end outer dimensions are approximately 38 5/8" width X 14 5/8" height -

32" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Black + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 26" OR 26" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 25. 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