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    Triangle IWS33 37" x 37" Industrial Exhaust Shutter ID

    Triangle IWS33 37" x 37" Industrial Exhaust Shutter ID

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    Optimize your industrial ventilation system with the heavy-duty Triangle IWS33 Industrial Exhaust Shutter ID. Designed for secure and reliable passive ventilation, this essential component works seamlessly with industrial exhaust fans to maintain optimal air quality and temperature control in demanding commercial and warehouse environments.

    The IWS33 (SKU: IWS33) features durable construction engineered for long-term, low-maintenance operation:

    • Constructed with a robust, welded galvanized steel frame and a bronze finish, polyester powder-coated for corrosion resistance.
    • Features high-quality, extruded aluminum blades and durable bronze pivot bushings for smooth, quiet performance.
    • The 37" x 37" inside dimensions ensure a perfect fit for compatible exhaust fans, automatically opening and closing to prevent backdraft and seal out insects and dust when the fan is off.

    Trust Triangle for superior airflow management.

    Built to Your Space

    Quote required — we confirm configuration, availability, and freight before purchase. Most quotes are answered within one business day.

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    Need help choosing? Our industrial fan experts are available to help you find the perfect solution. Call us at (888) 864-4344 or use our Fan Finder.

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