24" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 17 3/4" x 1"

actual front end outer dimensions are approximately 18 5/8" width X 22 5/8" height

+ Product Details Heavy-Duty Steel Construction - Made from 20-gauge steel for superior durability and reliable performance

+ Product Details Size - 10" X 10" is the size for the duct opening measurement only

24" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 Actual Filter Size – 25+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 6" OR 6" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 5. 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 Made