CALOWEST

Insulated sandwich duct composed of a Ventilwest-type inner tube, a 25 mm thick fiberglass intermediate insulation layer with a density of 18 kg/m³, and an outer sheath made of an aluminum and polyester composite. At PHONIWEST , this is a CALOWEST duct with micro-perforations in the inner tube, enhancing acoustic absorption through insulation.

Applicable Standards
  • EN 13501-1

    Fire classification of construction products and building elements - Part 1: Classification using data from reaction to fire tests

  • EN 13180

    Ventilation for buildings - Ductwork - Dimensions and mechanical requirements for flexible ducts

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