STJH-COMBINATION-FIRE-SMOKE-DAMPER-813X914-3H

Combination Fire and Smoke Damper 813 x 914 mm Three-Hour

A three-hour vertical fire-smoke configuration for demanding barrier openings.

Airfoil blades provide a defined passage through the open damper.
Vertical configuration fits taller shaft and partition openings.

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Introducción del producto

This taller-than-wide assembly uses an airfoil blade bank within a rigid steel frame. Its three-hour configuration and higher pressure selection distinguish it from the standard 1.5-hour square models.

Características clave

Airfoil blades provide a defined passage through the open damper.
Vertical configuration fits taller shaft and partition openings.

Parámetros técnicos

Nominal Width	813 mm
Nominal Height	914 mm
Mounting	Vertical
Blade Profile	Steel airfoil blades
Frame	Galvanized steel
Leakage Class Configuration	Class I
Fire Resistance Configuration	3 hours
Maximum Velocity	3000 fpm
Pressure / Temperature Configuration	8 in. w.g. / 350 °F (177 °C)
Customization	Available for the required barrier arrangement and actuator interface.

Applications

High-rated vertical shaft penetrations
Combined compartment barriers on substantial duct routes

Solutions for Your Application

The barrier calls for a higher fire-resistance configuration.

This selection identifies a three-hour assembly rather than extending the rating of the lighter-duty model.

The duct system imposes elevated pressure on closed blades.

The model uses the higher-pressure configuration appropriate to its blade and frame arrangement.

Opciones disponibles

Position feedback accessories
Actuator operating supply
Sleeve connection details

Planning a Combination Fire and Smoke Damper 813 x 914 mm Three-Hour specification?

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