30-inch horizontal-mount exhaust backdraft damper

30-Inch Horizontal-Mount Backdraft Damper

SKU:
WBB771573
Model/MPN:
411-STD 30
Our Price:
$149.94
BBB Accredited Business Badge
Free Shipping on Qualifying Orders Over $99
Shipping & Availability:
  • Fast Shipping: Estimated delivery in 3-6 Business Days
  • Bulk Pricing Available: Call 800-810-FILE or email us for a custom quote.
✔ Secure Checkout
✔ Business Purchasing Support
✔ 5.0 Google Store Rating
Product Specifications:
Country of Origin: US
Material: Aluminum/Galvanized Steel
Product Depth: 3"
Product Height: 30"
Product Type: Dampers
Product Width: 30"
Quantity Included: 1
Manufacturer Part Number: 411-STD 30
Width: 29-3/4 in
Depth: 2 in
Height: 29-3/4 in
Weight: 8 lbs
Diameter: 30 in
Free Area: 5.32 ft³
Max Pressure In W.G.: 1 in
Max Velocity: 2000 ft/min
Rough Opening: 30 x 30 in
Brand: Air Conditioning Products
For Use With: Power Roof Ventilators
Manufacturers Part Number: 411-STD 30
Mounting Location: Horizontal
Number of Panels: 1
Type: Backdraft
Warranty: 1 yr
(No reviews yet) Write a Review
Adding to cart… The item has been added
✔ Fast Shipping · ✔ Secure Checkout · ✔ Made in USA
Questions? We're here to help.
Call 800-810-FILE or email us .
Free Shipping on Qualifying Orders Over $99
Product Specifications:
Country of Origin: US
Material: Aluminum/Galvanized Steel
Product Depth: 3"
Product Height: 30"
Product Type: Dampers
Product Width: 30"
Quantity Included: 1
Manufacturer Part Number: 411-STD 30
Width: 29-3/4 in
Depth: 2 in
Height: 29-3/4 in
Weight: 8 lbs
Diameter: 30 in
Free Area: 5.32 ft³
Max Pressure In W.G.: 1 in
Max Velocity: 2000 ft/min
Rough Opening: 30 x 30 in
Brand: Air Conditioning Products
For Use With: Power Roof Ventilators
Manufacturers Part Number: 411-STD 30
Mounting Location: Horizontal
Number of Panels: 1
Type: Backdraft
Warranty: 1 yr

This horizontal-mount exhaust backdraft damper is designed for users installing fans or powered roof ventilators in roof curbs, ductwork, or wall collars. It helps control backdraft in horizontal exhaust applications.

The non-flanged damper has a galvanized steel frame, aluminum blades, and felt seals along the blade leading edges. Spring assistance helps the blades open quickly. It measures 3 inches deep by 30 inches wide by 30 inches high.

Key Features:

  • Horizontal exhaust design: Supports recommended horizontal-mount exhaust installations.
  • Galvanized steel frame: Provides the damper’s frame construction.
  • Aluminum blades: Forms the operating blade assembly.
  • Felt blade seals: Helps the blades close more quietly and provides added weather protection.
  • Spring-assisted operation: Helps the blades open quickly when exhaust airflow begins.

Choose this 30-inch backdraft damper for horizontal exhaust setups using a fan or powered roof ventilator with compatible roof curb, ductwork, or wall-collar installation.

Country of Origin: US
Material: Aluminum/Galvanized Steel
Product Depth: 3"
Product Height: 30"
Product Type: Dampers
Product Width: 30"
Quantity Included: 1
Manufacturer Part Number: 411-STD 30
Width: 29-3/4 in
Depth: 2 in
Height: 29-3/4 in
Weight: 8 lbs
Diameter: 30 in
Free Area: 5.32 ft³
Max Pressure In W.G.: 1 in
Max Velocity: 2000 ft/min
Rough Opening: 30 x 30 in
Brand: Air Conditioning Products
For Use With: Power Roof Ventilators
Manufacturers Part Number: 411-STD 30
Mounting Location: Horizontal
Number of Panels: 1
Type: Backdraft
Warranty: 1 yr
Width: 3.00 in
Height: 30.00 in
Depth: 30.00 in
!