STJH-DYNAMIC-FIRE-DAMPER-914X914-HORIZONTAL

Dynamic Fire Damper 914 x 914 mm Horizontal

A large horizontal curtain assembly for floor-level duct penetrations.

Large format serves substantial vertical duct penetrations through floors.
The horizontal closure mechanism supports curtain travel across the opening.

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Product Introduction

The horizontal arrangement uses a spring to drive the curtain across a broad square opening. The frame is laid in the barrier plane, making its operating orientation materially different from a wall-mounted gravity-assisted layout.

Key Features

Large format serves substantial vertical duct penetrations through floors.
The horizontal closure mechanism supports curtain travel across the opening.

Technical Parameters

Nominal Size	914 x 914 mm
Mounting Plane	Horizontal
Frame Material	Galvanized steel
Frame Depth	56 mm
Blade Type	Folding galvanized curtain
Spring	Stainless steel closure spring
Dynamic Air Velocity	2000 fpm
Maximum Differential Pressure	4 in. w.g.
Fire / Link Configuration	1.5 hours; 165 °F link, with 212 °F or 286 °F options
Customization	Available for the floor opening and applicable duct arrangement.

Applications

Large floor duct penetrations
Horizontal compartment barriers

Solutions for Your Application

A vertical-mount device may not close reliably in a floor plane.

Use the horizontal closure configuration with the frame and spring in their intended orientation.

Maintenance access is difficult beneath a floor opening.

Place a service access point where the link and curtain mechanism can be reached.

Available Options

Fusible-link temperature selection
Factory-style connecting sleeve
Mounting-angle details

Planning a Dynamic Fire Damper 914 x 914 mm Horizontal specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

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