24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter RG66 Black-HP + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 6" or 6" x 10" duct opening (measured at the opening)

+ Product Details Size - 36"w X 30"h is the size for the duct opening measurement only

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 8" duct opening (measured at the opening)

+ Product Spec Sheet 2-Way Wall/Ceiling Register Spec Sheet

24" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter RG66 Black-HP + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 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