18-inch low-velocity automatic exhaust shutter

18-Inch Low-Velocity Automatic Exhaust Shutter

SKU:
WBB484667
Model/MPN:
502-STD-18
Our Price:
$62.94
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Product Specifications:
Country of Origin: US
Product Depth: 3
Product Height: 21
Product Type: Louvers & Vents
Product Width: 22
Quantity Included: 1
Manufacturer Part Number: 502-STD-18
Inside Width: 18 in
Inside Height: 18 in
Max Pressure In W.G.: 1 in
Max Velocity (per Minute): 2,000 ft/min
Rough Opening: 18-1/2 X 18-1/2 in
Brand Name: Air Conditioning Products
Flange Style: Rear Flange
Manufacturers Part Number: 502-STD-18
Material: Aluminum/Galvanized Steel
Mounting Position: Vertical
Type: Gravity Shutters
Shipping Method: Parcel
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Minimum Purchase:
2 units
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Free Shipping on Qualifying Orders Over $99
Product Specifications:
Country of Origin: US
Product Depth: 3
Product Height: 21
Product Type: Louvers & Vents
Product Width: 22
Quantity Included: 1
Manufacturer Part Number: 502-STD-18
Inside Width: 18 in
Inside Height: 18 in
Max Pressure In W.G.: 1 in
Max Velocity (per Minute): 2,000 ft/min
Rough Opening: 18-1/2 X 18-1/2 in
Brand Name: Air Conditioning Products
Flange Style: Rear Flange
Manufacturers Part Number: 502-STD-18
Material: Aluminum/Galvanized Steel
Mounting Position: Vertical
Type: Gravity Shutters
Shipping Method: Parcel
Minimum Purchase:
2 units

This 18-inch low-velocity automatic exhaust shutter is a rear-flanged, vertical-mount vent accessory for facilities using compatible exhaust fans. It allows air to move horizontally in one direction during fan operation, then helps block reverse airflow and exposure to outdoor elements when airflow stops.

The shutter uses blades that open in response to airflow and close by gravity after the fan shuts down. It is designed for direct-drive and belt-driven exhaust fans and is not for use with vane axial or tube axial fans. Product dimensions are 22 inches wide, 3 inches deep, and 21 inches high.

Key Features:

  • Automatic gravity closure: Blades close when the fan stops, helping reduce reverse airflow without manual operation.
  • One-way horizontal airflow: Supports exhaust airflow in the intended direction during fan operation.
  • Rear-flanged vertical mount: Provides the specified mounting configuration for vertical installation.
  • Direct-drive and belt-driven fan compatibility: Works with compatible direct-drive or belt-driven exhaust fan setups.
  • 18-inch low-velocity design: Offers an economy shutter option for low-velocity exhaust applications.

Choose this automatic exhaust shutter for compatible direct-drive or belt-driven exhaust fans where one-way horizontal airflow and gravity-operated closure are needed. Verify fan type and installation dimensions before ordering.

Country of Origin: US
Product Depth: 3
Product Height: 21
Product Type: Louvers & Vents
Product Width: 22
Quantity Included: 1
Manufacturer Part Number: 502-STD-18
Inside Width: 18 in
Inside Height: 18 in
Max Pressure In W.G.: 1 in
Max Velocity (per Minute): 2,000 ft/min
Rough Opening: 18-1/2 X 18-1/2 in
Brand Name: Air Conditioning Products
Flange Style: Rear Flange
Manufacturers Part Number: 502-STD-18
Material: Aluminum/Galvanized Steel
Mounting Position: Vertical
Type: Gravity Shutters
Shipping Method: Parcel
Width: 3.00 in
Height: 21.00 in
Depth: 22.00 in
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