STJH-BUBBLE-TIGHT-ISOLATION-DAMPER-1219X406

Bubble-Tight Isolation Damper 1219 x 406 mm

A wide single-blade isolation assembly for substantial containment branches.

The low, wide format fits shallow rectangular duct envelopes.
A continuous blade avoids a row of independently sealed louvers.

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Product Introduction

The elongated frame carries one double-skin blade across a broad, low passage. Its full-length axle supports coordinated movement of the wide leaf, and the perimeter seal is mechanically attached so the sealing element remains replaceable.

Key Features

The low, wide format fits shallow rectangular duct envelopes.
A continuous blade avoids a row of independently sealed louvers.

Technical Parameters

Nominal Size	1219 x 406 mm
Blade Form	Wide rectangular centre-pivoted double skin
Casing Choices	Painted steel, 304L or 316L stainless steel
Blade Seal	Mechanically fastened silicone
Bearing Position	External bolted sleeve bearings
Axle	Full-length stainless steel
Connection Type	Rectangular flanged
Leakage Selection	Bubble-tight using AMCA 500-D method
Velocity and Pressure Limits	20.3 m/s and 2.5 kPa
Customization	Available for the large-duct geometry and intended isolation service.

Applications

Wide containment ventilation ducts
Central process exhaust isolation sections

Solutions for Your Application

A tall isolation housing cannot fit the available duct envelope.

The approximately 3:1 passage maintains a broad opening with limited height.

A long seal could be difficult to replace as part of the blade.

Mechanical retention allows the silicone strip to be serviced independently.

Available Options

Corrosion-resistant stainless grades
Powered quarter-turn operation
Front or rear flange drilling

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