32" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 6" OR 6" x 24" duct opening (measured at the opening)

+ Product Details Size – 24"w X 24"h is the drop ceiling HVAC supply grille size - for T-Bar lay-in

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+ Product Details Size – 12" X 4" is the size for the duct opening (floor/vent hole) measurement only

32" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_Red Oak Wood + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 16" OR 16" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 18. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 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