32" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 + Product Details Size -

+ Product Details Size - 14"w X 14"h is the size for the duct opening measurement only

High Quality – high-quality steel with counter-sunk screw holes (screws included) and no sharp edges

Rigid gauge built for durability and long life in mind

+ Product Details Size - 16"w X 24"h is the size for the duct opening measurement only

Rigid Built For External Use – The sturdy and rigid design features noise-free components that eliminate vibration and excess noise to the louvers

32" x 20" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 + Product Details Size -+ 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