26" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Anodized Aluminum + Product Details Size –

+ Product Details Size – 34"w X 16"h is the size for the duct opening measurement only

and then smoothly drop in the grill

actual front end outer dimensions are approximately 41

+ Product Details Size - 16"w X 4"h is the size for the duct opening measurement only

75"H – fits a 18" X 10" duct opening

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