Triangle Fans IWSD Exterior Wall Exhaust Shutters Double Panel - Fan Housing Mounted

Triangle's IWSD exhaust shutters provide effective airflow but they also operate quietly. The shutter function automatically; opening, allowing air movement, and closing, when the fan is off. This model mounts to the fan housing.

Features:

• Exhaust shutters automatically open and close with fan operation
• Extruded corrosion resistant aluminum mill finish blades.
• Durable bronze bushings for smooth, maintenance free operation Polyester powder coated steel frame.