The Smith Filter Perm-A-Steel Filter is a lightweight, washable galvanized air filter engineered for light-duty industrial and commercial HVAC applications. Constructed from multiple layers of hot-dip galvanized expanded steel, the filter is assembled in alternating layers to maximize dust-holding capacity and internal loading efficiency while maintaining low airflow resistance.

Encased in a sturdy galvanized steel frame, the Perm-A-Steel Filter is ideal for use in restaurants, schools, office buildings, and light industrial systems where reusable, low-maintenance filtration is desired. It provides dependable performance at temperatures up to 425°F (218°C) and is available in standard and custom sizes with 1-inch, 2-inch, 3-inch, and 4-inch thickness options.

Offered through Total Filtration Services (TFS), the Smith Perm-A-Steel Filter delivers durable, long-life performance while reducing replacement costs and environmental waste.

• Constructed from hot dip galvanized steel
• Withstands temperatures up to 425°F
• Available in 1", 2", 3", and 4" thicknesses
• Rated for 267–978 FPM face velocity
• Dust holding with low resistance: 0.025"–0.370" W.G.
• CFM range: 282 – 3287