22" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter rg1010 + Product Details Size -

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

+ Product Details Size - 14"w X 32"h is the size for the duct opening measurement only

The 1/2" white insulation

+ Product Details Size – 18"w X 16"h is the size for the duct opening measurement only

+ Product Details Size – 32"w X 36"h is the size for the duct opening measurement only

22" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter rg1010 + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 10" OR 10" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 9. 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