Mars® Unheated NSF Series 42-Inch to 48-Inch Width Fans Provide Effective Environmental Separation With Minimal Maintenance.
Mars® Unheated NSF Series 42 to 48-inch width fans are designed to provide an air barrier between interior and exterior areas in a building. An Automatic Activation Switch ensures that dirt, dust, fumes and insects can't enter a building when doors or windows are opened. High-quality construction materials provide long-lasting durability. Low Profile design ensures that doors and windows won't be obstructed with this fan. Low Noise Level design provides quiet operation.
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