Fire Dampers – Duct Sleeves
DS MVHR 18| Horizontal Application | |||||||||||||||||||||
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Designed to protect ventilation duct that passes through fire rated walls made from block, brick, concrete or hollow plasterboard. A reinforced covering contains intumescent material that expands inwards, crushing PVC duct in the heat of a fire. They can be easily cut with a sharp knife and should be installed level with the surrounding wall. Performance
Horizontal fire damper installation: |
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| Vertical Application | |||||||||
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A surface mounted circular metal unit for use around PVC or steel duct that pass through fire rated ceilings or walls. The unit consists of a hinged, two part metal collar containing intumescent material with a quick release pin for easy fitting around pipes. Fixing lugs are supplied for simple attachment to block, brick concrete or plasterboard. Performance BS476 PARTS 20 & 22 (1987): Vertical fire damper installation: |
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