STJH-BACKDRAFT-DAMPER-VERTICAL-DISCHARGE

Backdraft Damper Vertical-Mount Discharge

Automatic reverse-flow prevention at a horizontal exhaust outlet.

Outlet-side fixing supports sidewall discharge layouts.
Separate blades allow the opening to respond directly to exhaust flow.

Introduction de produit

This vertical damper locates its fixing flange on the discharge side. Forward exhaust pushes the blades outward, while the hanging arrangement closes the opening when the fan stops. The flange orientation suits outlet-side seating.

Key Features

Outlet-side fixing supports sidewall discharge layouts.
Separate blades allow the opening to respond directly to exhaust flow.

Paramètres techniques

Mounting Orientation	Vertical
Design Flow Direction	Horizontal discharge
Mounting Flange	Discharge side
Frame Construction	Galvanized steel
Blade Construction	Aluminum
Operation	Air-pressure opening, gravity closure
Start-Open Pressure	Approximately 0.009 in. w.g., depending on dimensions
Velocity Limit	1500 fpm
Back Pressure Limit	2 in. w.g.
Customisation	Available for the selected exhaust outlet and installation geometry.

Applications

Sidewall exhaust outlets
Horizontal in-duct discharge points

Solutions for Your Application

Wind drives air back into an idle exhaust branch.

Closing blades interrupt the reverse path after forward flow falls away.

Only the outlet face is available for fixing.

The discharge flange presents the mounting edge on that side of the frame.

Options disponibles

Outlet dimensions
Fixing flange arrangement

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