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    Triangle RIWS39 43" x 43" Industrial Supply Shutter ID

    Triangle RIWS39 43" x 43" Industrial Supply Shutter ID

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    Maximize the efficiency of your industrial ventilation system with the Triangle RIWS39 Industrial Supply Shutter ID. Designed as a fan-mounted intake gravity damper, this 43" x 43" shutter (SKU: RIWS39) ensures reliable, maintenance-free airflow control for large commercial spaces.

    Engineered by Triangle for superior performance, the RIWS39 automatically opens when the fan is operating and closes to seal the opening when the fan is off, preventing backdraft, dust, and insects. This shutter features:

    • Durable Construction: Welded galvanized steel frame with a bronze, powder-coated finish for enhanced corrosion resistance.
    • High-Quality Blades: Extruded aluminum blades and bronze pivot bushings for smooth, quiet, and reliable operation.
    • Optimal Airflow: Low airflow resistance design perfect for integrating with industrial supply fans.

    The RIWS39 is an essential component for optimizing air circulation in challenging industrial environments.

    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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