The Smith Filter Lifetime Filter is a medium weight aluminum air filter engineered for long-term, washable performance in commercial, industrial, and institutional HVAC systems. Built from multiple layers of expanded aluminum media in alternating layers, the filter provides maximum dust-holding capacity, low airflow resistance, and consistent internal loading.

Encased in a heavy-gauge aluminum frame, the Lifetime Filter delivers durable, rust-resistant performance in demanding environments such as schools, hospitals, office buildings, and hotels. It is recommended where a permanent, low-maintenance filter is preferred over disposable designs.

Rated for continuous operation up to 250°F (121°C), the Lifetime Filter is available in standard and special sizes with 3-inch and 4-inch thickness options, providing dependable, long-life air filtration through Total Filtration Services (TFS).

• Medium weight aluminum construction
• Washable and reusable
• Rust resistant frame
• Low resistance for efficient airflow
• Operating temperature up to 250°F