20-inch automatic exhaust shutter

20-Inch Automatic Exhaust Shutter

SKU:
WBB484673
Model/MPN:
556-STD-20
Our Price:
$99.94
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Product Specifications:
Country of Origin: US
Product Depth: 4
Product Height: 23
Product Type: Louvers & Vents
Product Width: 24
Quantity Included: 1
Manufacturer Part Number: 556-STD-20
Inside Width: 20 in
Inside Height: 20 in
Max Pressure In W.G.: 1 in
Max Velocity (per Minute): 2500 ft/min
Rough Opening: 20-1/2 X 20-1/2 in
Brand Name: Air Conditioning Products
Finish: Mill Finish
Flange Style: Rear Flange
Manufacturers Part Number: 556-STD-20
Material: Aluminum/Galvanized Steel
Mounting Location: Vertical
Mounting Position: Vertical
Type: Gravity Shutters
Shipping Method: Parcel
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Minimum Purchase:
2 units
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Call 800-810-FILE or email us .
Free Shipping on Qualifying Orders Over $99
Product Specifications:
Country of Origin: US
Product Depth: 4
Product Height: 23
Product Type: Louvers & Vents
Product Width: 24
Quantity Included: 1
Manufacturer Part Number: 556-STD-20
Inside Width: 20 in
Inside Height: 20 in
Max Pressure In W.G.: 1 in
Max Velocity (per Minute): 2500 ft/min
Rough Opening: 20-1/2 X 20-1/2 in
Brand Name: Air Conditioning Products
Finish: Mill Finish
Flange Style: Rear Flange
Manufacturers Part Number: 556-STD-20
Material: Aluminum/Galvanized Steel
Mounting Location: Vertical
Mounting Position: Vertical
Type: Gravity Shutters
Shipping Method: Parcel
Minimum Purchase:
2 units

This automatic exhaust shutter is an exhaust-fan accessory for commercial ventilation users who need to direct airflow outward while limiting reverse airflow when the fan is off. Its gravity-closing blades also help shield the opening from environmental elements after airflow stops.

The counterbalanced, rear-flanged shutter is designed for vertical mounting at angles up to 45 degrees. Blades open in response to airflow and close by gravity when the fan shuts down. It measures 24 inches wide by 4 inches deep by 23 inches high and is compatible with direct-drive and belt-driven exhaust fans; it is not for use with vane axial or tube axial fans.

Key Features:

  • Automatic blade action: Blades open with airflow and close when the fan stops, supporting hands-free operation.
  • Reverse-airflow control: Helps prevent airflow from moving back through the opening when ventilation stops.
  • Counterbalanced design: Allows vertical installation at mounting angles up to 45 degrees.
  • Rear flanges: Provide added weather protection at the installation point.
  • Exhaust-fan compatibility: Works with direct-drive and belt-driven exhaust fans.

Choose this 20-inch automatic shutter for direct-drive or belt-driven exhaust fan applications requiring one-way horizontal airflow and gravity-operated closure.

Country of Origin: US
Product Depth: 4
Product Height: 23
Product Type: Louvers & Vents
Product Width: 24
Quantity Included: 1
Manufacturer Part Number: 556-STD-20
Inside Width: 20 in
Inside Height: 20 in
Max Pressure In W.G.: 1 in
Max Velocity (per Minute): 2500 ft/min
Rough Opening: 20-1/2 X 20-1/2 in
Brand Name: Air Conditioning Products
Finish: Mill Finish
Flange Style: Rear Flange
Manufacturers Part Number: 556-STD-20
Material: Aluminum/Galvanized Steel
Mounting Location: Vertical
Mounting Position: Vertical
Type: Gravity Shutters
Shipping Method: Parcel
Width: 4.00 in
Height: 23.00 in
Depth: 24.00 in
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