Flexible Ducts are available in uninsulated or plain and insulated variants. The product is used in heating, ventilation, and air conditioning to deliver and remove air. It is also used in some systems to eliminate noise from vibration and expansion and contraction.

RUBBER INSULATION (ARMAFLEX)
Armaflex Class 0 is a flexible elastomeric foam based on synthetic rubber insulation material that reliably protects against water vapour ingress due to its closed-cell