32" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil-Insulated Line Set + Product Details Size -

+ Product Details Size - 32"w X 26"h is the size for the duct opening measurement only

Actual Filter Size – 23 3/4"w x 27 3/4" x 1"

+ Product Details Size - 20"w X 12"h is the size for the duct opening measurement only

Outer Dimensions Are 17

32" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil-Insulated Line Set + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 30" OR 30" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 75" x 29. 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