18 inch horizontal-mount exhaust backdraft damper

18 in. Horizontal-Mount Exhaust Backdraft Damper

SKU:
WBB771505
Model/MPN:
411-STD 18
Our Price:
$63.94
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Product Specifications:
Country of Origin: US
Material: Aluminum/Galvanized Steel
Product Depth: 18"
Product Height: 2.5"
Product Type: Dampers
Product Width: 18"
Quantity Included: 1
Manufacturer Part Number: 411-STD 18
Width: 17-3/4 in
Depth: 2 in
Height: 17-3/4 in
Weight: 5 lbs
Diameter: 18 in
Free Area: 1.71 ft³
Max Pressure In W.G.: 1 in
Max Velocity: 2000 ft/min
Rough Opening: 18 x 18 in
Brand: Air Conditioning Products
For Use With: Power Roof Ventilators
Manufacturers Part Number: 411-STD 18
Mounting Location: Horizontal
Number of Panels: 1
Type: Backdraft
Warranty: 1 yr
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Product Specifications:
Country of Origin: US
Material: Aluminum/Galvanized Steel
Product Depth: 18"
Product Height: 2.5"
Product Type: Dampers
Product Width: 18"
Quantity Included: 1
Manufacturer Part Number: 411-STD 18
Width: 17-3/4 in
Depth: 2 in
Height: 17-3/4 in
Weight: 5 lbs
Diameter: 18 in
Free Area: 1.71 ft³
Max Pressure In W.G.: 1 in
Max Velocity: 2000 ft/min
Rough Opening: 18 x 18 in
Brand: Air Conditioning Products
For Use With: Power Roof Ventilators
Manufacturers Part Number: 411-STD 18
Mounting Location: Horizontal
Number of Panels: 1
Type: Backdraft
Warranty: 1 yr

This 18 in. backdraft damper is for users installing horizontal exhaust ventilation systems. It works with a fan or powered roof ventilator to help manage backdraft through roof curbs, ductwork, or wall collars.

The non-flanged damper has a galvanized steel frame and aluminum blades. Felt seals along the blade leading edges support quiet closing and added weather protection. Spring-assisted blades open quickly. Overall dimensions are 18 in. wide, 18 in. deep, and 2.5 in. high.

Key Features:

  • Horizontal exhaust design: Fits recommended horizontal-mount exhaust applications.
  • Spring-assisted blades: Helps the blades open quickly when ventilation equipment operates.
  • Felt blade seals: Supports quieter closing and improved weather protection.
  • Galvanized steel frame: Provides a steel frame for the damper assembly.
  • Aluminum blades: Provides aluminum blade construction within the damper.

Choose this non-flanged 18 in. damper for horizontal exhaust installations using compatible roof curbs, ductwork, or wall collars with a fan or powered roof ventilator.

Country of Origin: US
Material: Aluminum/Galvanized Steel
Product Depth: 18"
Product Height: 2.5"
Product Type: Dampers
Product Width: 18"
Quantity Included: 1
Manufacturer Part Number: 411-STD 18
Width: 17-3/4 in
Depth: 2 in
Height: 17-3/4 in
Weight: 5 lbs
Diameter: 18 in
Free Area: 1.71 ft³
Max Pressure In W.G.: 1 in
Max Velocity: 2000 ft/min
Rough Opening: 18 x 18 in
Brand: Air Conditioning Products
For Use With: Power Roof Ventilators
Manufacturers Part Number: 411-STD 18
Mounting Location: Horizontal
Number of Panels: 1
Type: Backdraft
Warranty: 1 yr
Width: 18.00 in
Height: 2.50 in
Depth: 18.00 in
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