Heavy

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  Blue-SZERO bubble-tight shut-off damper
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  CFD01 – A0 (A60) E120S Fire damper
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  DUX – dual flow pressure relief damper for chemical gas
• 

  Linea HD – active heavy duty floor grille
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  NRD61 – back draft damper
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  NRD61V – horizontal mounted vertical flow back draft damper
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  NRDR – backdraft damper for round ducts
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  PRD-X – motorised pressure relief vent for fire suppression and blast protection
• 

  PRD200 – pressure relief damper for staircase pressurization control systems
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  PRD61 – pressure relief damper
• 

  TVD – Tunnel Ventilation Damper
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  WBL EASY – vent cover

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