Damper, Roof Mount MPN:4HX66
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In Stock
Free Shipping
In Stock
SKU
510-G0293465
Damper, Roof Mount
This roof mount backdraft damper from Dayton is a reliable solution for maintaining a consistent airflow in your ventilation system. Designed for square ducts and fans up to 18 inches in diameter, it ensures that air flows smoothly and efficiently, preventing backdrafts and air leaks. The durable aluminum backdraft damper features a galvanized steel frame and is built to withstand high air velocities of up to 2000 fpm. Perfect for use in commercial and industrial settings, this damper is ideal for applications such as HVAC systems, exhaust ventilation, and rooftop installations, providing a cost-effective and long-lasting solution for maintaining a healthy and efficient indoor environment.
Top product features:
- Backdraft damper for preventing air leaks in ducts
- Galvanized steel frame for durability and corrosion resistance
- Maximum air velocity of 2000 fpm for efficient airflow
Top product applications:
- Backdraft
- Nominal Duct Diameter Not Applicable
- Square Duct Shape
21 In.H-W 4.5 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 21 in, Rough Opening Diameter 19 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 18 in, For Duct Shape Square, Free Area 1.9 sq ft, Overall Width 21 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 18 1/2 in
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: 21.80
- Package Width: 2.80
- Package Height: 23.00
- Package Weight: 5.50
Product info last updated on February 2, 2026 6:11am UTC
Category: Ventilation