Backdraft Damper, Horizontal, 33-3/4Sq MPN:3HHL9
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In Stock
Free Shipping
In Stock
SKU
510-G1145216
Backdraft Damper, Horizontal, 33-3/4Sq
This Dayton Backdraft Damper is a horizontal installation designed for square ducts with a nominal diameter of 34 inches. It features a 7.7 sq ft free area and a maximum air velocity of 2250 fpm, making it suitable for various applications such as commercial and industrial HVAC systems. The damper is constructed with a galvanized steel frame and aluminum backdraft panels, providing durability and corrosion resistance. Its compact size and easy installation make it an ideal choice for new construction or retrofit projects, ensuring efficient airflow and optimal system performance.
Top product features:
- Backdraft damper application for preventing backdraft and air leaks in ducts
- Galvanized steel frame for durability and resistance to corrosion
- Maximum air velocity of 2250 fpm for efficient airflow management
Top product applications:
- Backdraft
- Nominal Duct Diameter 34 in
- Fan Diameter 34 in
33.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 34 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 33 3/4 in, Rough Opening Diameter 34 in, Rough Opening Shape Square, Fits Fan Diameter 34 in, For Duct Shape Square, Free Area 7.7 sq ft, Overall Width 33 3/4 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 34 in, Maximum Pressure 1 in wc
Additional Information
- Country of Origin: US
- Drop Ship Item: No
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 1 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 34.60
- Package Width: 2.80
- Package Height: 35.50
- Package Weight: 13.72
Product info last updated on February 5, 2026 1:32am UTC
Category: Ventilation