32" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter White + Product Details Size -

+ Product Details Size - 8"w X 26"h is the size for the duct opening measurement only

+ Product Details Size – 20"w X 18"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 26" or 26" x 8" duct opening (measured at the opening)

this HVAC air supply grille offers the perfect combination of style

32" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter White + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 28" OR 28" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 27. 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