0.7A DC24V Fire Dampers For Ductwork 2mm 3mm Thickness
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Fire hydrant Application: Used in through-wall pipes of ventilation system, which need to be fireproofing to prevent the spread of fire along the duct. Mechanical dampers shut the cross sectional area of a duct in the event of a fire either by means of ......
Henan Shuangxin Fire Environmental Protection Equipment Manufacturing Co., Ltd.
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