30" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter fixed bar + Product Spec Sheet Aluminum

+ Product Spec Sheet Aluminum Return Grille Spec Sheet

10"w X 6"h Is The Size For The Duct Opening Measurement Only

It features an eight-tumbler lock with a supplied key for secure access

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 14" OR 14" x 20" duct opening (measured at the opening)

30" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter fixed bar + Product Spec Sheet Aluminum+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 26" OR 26" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 27. 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