30" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille this easy-to-install grille fits seamlessly

this easy-to-install grille fits seamlessly into any standard return filter opening

Elevate comfort while saving on bills with HVAC Premium's Aluminum Adjustable Return Grill

Designed with two mounting base options—solid and ring—it offers flexible installation

resisting rust and wear while adding a sleek

Locking Security System – Features a built-in eight-tumbler lock and a supplied key to prevent tampering and maintain consistent temperature settings

30" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille this easy-to-install grille fits seamlessly+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 8" OR 8" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 7. 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